diff --git a/B05_Profile/B05_Profile_Router_Confirm.py b/B05_Profile/B05_Profile_Router_Confirm.py
index ea39175f2..32ae9dd84 100644
--- a/B05_Profile/B05_Profile_Router_Confirm.py
+++ b/B05_Profile/B05_Profile_Router_Confirm.py
@@ -175,6 +175,7 @@ async def sync_uphill_overrides_into_designs(
                 surface_drop_m=ford_drop_at(float(chainage), ford_drops),
                 **curve_widening_args(cross_record),
                 **stored_shoulder_extend(design),  # 노견 확장(139-6)
+                ford_paved=bool(design.get("ford_paved")),  # 물넘이 자리 측구 없음(286-2)
             )
             next_design["status"] = design.get("status", "provisional")
             next_design["pavement_suggested"] = design.get("pavement_suggested", pavement_suggested)
diff --git a/B06_Section/B06_Section_Cross_Refresh.ts b/B06_Section/B06_Section_Cross_Refresh.ts
index 987e4cfdc..437e948a4 100644
--- a/B06_Section/B06_Section_Cross_Refresh.ts
+++ b/B06_Section/B06_Section_Cross_Refresh.ts
@@ -359,6 +359,8 @@ function refreshLocally(input: CrossRefreshInput): number[] | null {
             choice?.ditch_type ??
             (typeof design.ditch_type === "string" ? design.ditch_type : "standard"),
           paved: pavedBySpecs(section),
+          // 물넘이 자리 = 측구 없음(286-2 · 서버 `ford_pavement_ranges` 짝 = 얹힌 제원 범위)
+          fordPaved: Boolean(section.ford_pavement),
           standard,
           berm: bermAt(section.chainage_m, design),
           rockBoundaryOffsetM,
diff --git a/B06_Section/B06_Section_Engine_Design.py b/B06_Section/B06_Section_Engine_Design.py
index db44611ca..53d9f7efb 100644
--- a/B06_Section/B06_Section_Engine_Design.py
+++ b/B06_Section/B06_Section_Engine_Design.py
@@ -194,6 +194,7 @@ def compute_cross_design(
     spoil_fill: dict[str, Any] | None = None,
     shoulder_extend_left_m: float = 0.0,
     shoulder_extend_right_m: float = 0.0,
+    ford_paved: bool = False,
 ) -> dict[str, Any]:
     """측점 하나의 표준횡단 설계선과 절·성토 단면적을 계산한다.
 
@@ -210,6 +211,8 @@ def compute_cross_design(
         입력이며, None·45m 이상이면 확폭이 없다.
     curve_outer_side: 곡선 **바깥쪽**("left"/"right"). 확폭은 그쪽으로만 붙는다
         (2026-09-06 사용자 확정). 값이 없으면 확폭을 넣지 않는다.
+    ford_paved: 물넘이포장 범위 안 측점(286-2) — 측구 없음 · 결과에 `ford_paved` 로 되실음.
+        TS 짝 `fordPaved`.
     surface_drop_m: 노면을 통째로 내리는 양(m) — 세월교 월류 높이. 구체 위 노면은 월류
         높이만큼 낮게 앉으므로 계획고를 그만큼 내려 잡는다. 단면 전체가 평행 이동하므로
         횡단경사·측구·사면 규칙은 그대로고 절·성토 면적만 따라 바뀐다(2026-08-30 사용자).
@@ -299,6 +302,7 @@ def compute_cross_design(
         berm=berm,
         shoulder_extend_left_m=shoulder_extend_left_m,
         shoulder_extend_right_m=shoulder_extend_right_m,
+        no_ditch=bool(ford_paved),
     )
 
     # 적분 오프셋 = 지반 샘플 ∪ 설계 꼭짓점(샘플 범위 안쪽만). 꼭짓점을 넣어야
@@ -529,6 +533,8 @@ def compute_cross_design(
         # 뒤에 쓸 자리가 있다. **되살릴 때는 저장분에서 읽지 말고 계산해서 쓸 것.**
         "cut_slope_segments": geometry.cut_slope_segments(),
     }
+    if ford_paved:
+        result["ford_paved"] = True
     if drop > 0:
         # 내려 앉힌 양 — 프론트가 "월류가 없었다면" 노면을 점선으로 되그리는 데 쓴다.
         result["surface_drop_m"] = round(drop, 4)
diff --git a/B06_Section/B06_Section_Engine_Design_Geometry.py b/B06_Section/B06_Section_Engine_Design_Geometry.py
index 3249f58da..5b554b273 100644
--- a/B06_Section/B06_Section_Engine_Design_Geometry.py
+++ b/B06_Section/B06_Section_Engine_Design_Geometry.py
@@ -62,6 +62,7 @@ class _SectionGeometry:
         berm: BermSpec | None = None,
         shoulder_extend_left_m: float = 0.0,
         shoulder_extend_right_m: float = 0.0,
+        no_ditch: bool = False,
     ) -> None:
         half_road = group["road_width_m"] / 2.0
         # 곡선부 확폭은 **한쪽으로만** 붙는다(2026-09-06 사용자 확정: 곡선 바깥쪽).
@@ -144,6 +145,9 @@ class _SectionGeometry:
         self.has_ditch = auto_ditch if (choice is None or both_fill) else choice
         #: 그 측점에 **사용자가 정한 선택**(없으면 자동). 결과와 갈라 내보낸다.
         self.ditch_choice = None if both_fill else choice
+        # 물넘이포장 자리(286-2) — 파인 노면이라 측구가 안 섬 · 선택은 그대로(시설을 걷으면 되살아남).
+        if no_ditch:
+            self.has_ditch = False
 
         # 설계선 쉬프트 = 쪽마다 사면 이동(≥ 0 · 139-6 · 151-2) — 단면유형 · 측구 판정은 **옮기기 전**
         # 노견에서(위) · 노견(폭 고정) · 측구 · 사면이 같이 바깥으로 · 늘어난 폭은 차도.
diff --git a/B06_Section/B06_Section_Engine_SampleExtend.py b/B06_Section/B06_Section_Engine_SampleExtend.py
index b3523a2e6..29eac4fb1 100644
--- a/B06_Section/B06_Section_Engine_SampleExtend.py
+++ b/B06_Section/B06_Section_Engine_SampleExtend.py
@@ -158,6 +158,7 @@ def extend_unclosed_sections(
                 berm=stored_berm(design),
                 **curve_widening_args(section),
                 **stored_shoulder_extend(design),  # 노견 확장(139-6)
+                ford_paved=bool(design.get("ford_paved")),  # 물넘이 자리 측구 없음(286-2)
             )
 
         try:
diff --git a/B06_Section/B06_Section_Engine_SpoilFill.py b/B06_Section/B06_Section_Engine_SpoilFill.py
index 28b280e5c..c7b0c2d30 100644
--- a/B06_Section/B06_Section_Engine_SpoilFill.py
+++ b/B06_Section/B06_Section_Engine_SpoilFill.py
@@ -217,6 +217,7 @@ def enforce_spoil_fills(
                 },
                 **curve_widening_args(section),
                 **stored_shoulder_extend(design),  # 노견 확장(139-6)
+                ford_paved=bool(design.get("ford_paved")),  # 물넘이 자리 측구 없음(286-2)
             )
         except (ValueError, KeyError):
             return None
diff --git a/B06_Section/B06_Section_Router.py b/B06_Section/B06_Section_Router.py
index 3247a715e..6106b23c8 100644
--- a/B06_Section/B06_Section_Router.py
+++ b/B06_Section/B06_Section_Router.py
@@ -46,6 +46,7 @@ from B06_Section.B06_Section_Router_Design import (
 from B06_Section.B06_Section_Router_Design import (
     USER_TOUCHED_KEYS,
     ford_drop_at,
+    ford_pavement_ranges,
     ford_surface_drops,
     paved_at,
     pavement_ranges,
@@ -600,6 +601,7 @@ async def compute_cross_section_design(
             berm=stored_berm(stored_design or {}),
             **curve_widening_args(cross_record),
             **stored_shoulder_extend(stored_design or {}),  # 노견 확장(139-6)
+            ford_paved=paved_at(request.chainage_m, ford_pavement_ranges(project_root)),
         )
         # B06 지정 시점은 잠정치. B07 도면 확정 시 동일 엔진으로 재계산해 confirmed로 승격한다.
         design["status"] = "provisional"
diff --git a/B06_Section/B06_Section_Router_Design.py b/B06_Section/B06_Section_Router_Design.py
index 65a26467b..392600390 100644
--- a/B06_Section/B06_Section_Router_Design.py
+++ b/B06_Section/B06_Section_Router_Design.py
@@ -77,12 +77,20 @@ def pavement_ranges(project_root: Path) -> list[tuple[float, float]]:
             ranges.append((min(float(start), float(end)), max(float(start), float(end))))
     except Exception:  # noqa: BLE001 — 정본을 못 읽어도 설계 계산은 이어 간다
         logger.exception("B06 포장 구간을 읽지 못했습니다 (사용자 지정 없음으로 본다)")
-    for chainage, spec in load_culvert_sets(project_root).items():
-        if spec.get("type") != "ford_pavement":
-            continue
-        half = float(spec.get("span_m") or 0.0) / 2.0
-        ranges.append((chainage - half, chainage + half))
-    return ranges
+    return ranges + ford_pavement_ranges(project_root)
+
+
+def ford_pavement_ranges(project_root: Path | None) -> list[tuple[float, float]]:
+    """물넘이포장 범위(기준 ± 월류 폭/2) — 포장 필수 · 측구 없음(286-2). 판정은 `paved_at`."""
+    if project_root is None:
+        return []
+    sets = load_culvert_sets(project_root).items()
+    halves = [
+        (at, float(s.get("span_m") or 0.0) / 2.0)
+        for at, s in sets
+        if s.get("type") == "ford_pavement"
+    ]
+    return [(at - half, at + half) for at, half in halves]
 
 
 def ford_surface_drops(project_root: Path | None) -> list[tuple[float, float]]:
@@ -207,6 +215,7 @@ def enforce_pavement_ranges(
     사용자 조작값(반폭·구조물 조정)은 그대로 승계한다.
     """
     ranges = pavement_ranges(project_root)
+    ford_ranges = ford_pavement_ranges(project_root)
     ford_drops = ford_surface_drops(project_root)
     changed = 0
     for section in cross_sections:
@@ -215,7 +224,8 @@ def enforce_pavement_ranges(
             continue
         chainage = float(section.get("chainage_m", 0.0))
         wanted = paved_at(chainage, ranges)
-        if bool(design.get("paved")) == wanted:
+        ford_paved = paved_at(chainage, ford_ranges)  # 물넘이 자리 = 측구 없음(286-2)
+        if bool(design.get("paved")) == wanted and bool(design.get("ford_paved")) == ford_paved:
             continue
         try:
             recomputed = compute_cross_design(
@@ -238,6 +248,7 @@ def enforce_pavement_ranges(
                 berm=stored_berm(design),
                 **curve_widening_args(section),
                 **stored_shoulder_extend(design),  # 노견 확장(139-6)
+                ford_paved=ford_paved,
             )
         except (ValueError, KeyError):
             continue
@@ -266,6 +277,7 @@ def enforce_design_lines(
     from B06_Section.B06_Section_Engine_Structures_Wall import berm_span_at, load_berm_spans
 
     ford_drops = ford_surface_drops(project_root)
+    ford_ranges = ford_pavement_ranges(project_root)
     spans = load_berm_spans(project_root)
     changed = 0
     for section in cross_sections:
@@ -296,6 +308,7 @@ def enforce_design_lines(
                 berm=stored_berm(design),
                 **curve_widening_args(section),
                 **stored_shoulder_extend(design),
+                ford_paved=paved_at(chainage, ford_ranges),
             )
         except (ValueError, KeyError):
             continue
@@ -351,6 +364,7 @@ def enforce_ford_surface_drops(
                 berm=stored_berm(design),
                 **curve_widening_args(section),
                 **stored_shoulder_extend(design),  # 노견 확장(139-6)
+                ford_paved=bool(design.get("ford_paved")),
             )
         except (ValueError, KeyError):
             continue
@@ -423,6 +437,7 @@ def attach_default_designs(
     modes = default_section_modes(longitudinal)
     pavement = pavement_suggestions(longitudinal)
     paved_ranges = pavement_ranges(project_root) if project_root else []
+    ford_ranges = ford_pavement_ranges(project_root)
     ford_drops = ford_surface_drops(project_root)
     for section in cross_sections:
         if section.get("design"):
@@ -441,6 +456,7 @@ def attach_default_designs(
                 rock_boundary_offset_m=STANDARD_ROCK_BOUNDARY_DEFAULT_OFFSET_M,
                 surface_drop_m=ford_drop_at(chainage, ford_drops),
                 **curve_widening_args(section),
+                ford_paved=paved_at(chainage, ford_ranges),
             )
             design.update(status="provisional", pavement_suggested=suggested)
             section["design"] = design
@@ -501,6 +517,7 @@ def recompute_designs_for_alignment(
     modes = default_section_modes(longitudinal)
     pavement = pavement_suggestions(longitudinal)
     paved_ranges = pavement_ranges(project_root) if project_root else []
+    ford_ranges = ford_pavement_ranges(project_root)
     ford_drops = ford_surface_drops(project_root)
     stored_by_chainage = {
         round(float(record["chainage_m"]), 3): (record.get("design") or {})
@@ -559,6 +576,7 @@ def recompute_designs_for_alignment(
                 berm=session_berms.get(key) or stored_berm(stored),
                 **curve_widening_args(section),
                 **stored_shoulder_extend(stored),  # 노견 확장(139-6)
+                ford_paved=paved_at(chainage, ford_ranges),
             )
         except (ValueError, KeyError):
             continue
@@ -603,6 +621,7 @@ def compute_default_designs(
     default_modes = default_section_modes(longitudinal)
     pavement = pavement_suggestions(longitudinal)
     paved_ranges = pavement_ranges(root)
+    ford_ranges = ford_pavement_ranges(root)
     ford_drops = ford_surface_drops(root)
     results: list[tuple[float, dict[str, Any]]] = []
     for chainage_m in chainages:
@@ -642,6 +661,7 @@ def compute_default_designs(
                 surface_drop_m=ford_drop_at(chainage_m, ford_drops),
                 berm=stored_berm(user),
                 **curve_widening_args(cross),
+                ford_paved=paved_at(chainage_m, ford_ranges),
             )
             for key in ("berm", "cut_slope_ratio_user"):
                 if user.get(key) is not None:
diff --git a/B06_Section/B06_Section_UI_Cross_Ford_Pavement.ts b/B06_Section/B06_Section_UI_Cross_Ford_Pavement.ts
index f833f5624..5ca23d584 100644
--- a/B06_Section/B06_Section_UI_Cross_Ford_Pavement.ts
+++ b/B06_Section/B06_Section_UI_Cross_Ford_Pavement.ts
@@ -10,7 +10,9 @@
  *   · 기존 계획고는 **점선**, 물넘이 바닥은 **실선**.
  *   · 포장 필수 — 일반 포장층과 구분되게 진한 회색 + 빗금으로 채운다.
  *
- * 유입측 판정은 `section_mode`(상단측 절토 = 등고가 높은 쪽 = 상류)를 따른다.
+ * 유입측 = 표고가 높은 쪽 — 설계선 양 끝(비탈이 원지반을 만나는 자리) 표고로 가름 · 노면은 경사각도
+ * (`ford_slope_deg` → `slope_pct`)만큼 표고 낮은 쪽(유출)으로 기움(286-2). 양 끝이 같으면 `section_mode`
+ * (상단측 절토 = 상류).
  * ========================================================================== */
 
 import type { CrossDesign } from "./B06_Section_Api_Fetch";
@@ -41,11 +43,17 @@ interface Edge {
   elevation_m: number;
 }
 
+/** 유입(상류)이 좌측(+offset)인가 — 설계선 양 끝 표고가 높은 쪽(286-2) · 같으면 단면유형. */
+export function inflowLeft(design: CrossDesign): boolean {
+  const line = [...(design.design_line ?? [])].sort((a, b) => a.offset_m - b.offset_m);
+  const gap = line.length >= 2 ? line[line.length - 1].elevation_m - line[0].elevation_m : 0;
+  return Math.abs(gap) > 1e-3 ? gap > 0 : design.section_mode !== "right_cut";
+}
+
 /** 유입측(상류) 부호 — 그 방향으로 갈수록 바닥이 높아진다. */
 function inflowSign(design: CrossDesign, offsetM: number): number {
-  const inflowLeft = design.section_mode !== "right_cut";
   const towardLeft = offsetM > 0;
-  return towardLeft === inflowLeft ? 1 : -1;
+  return towardLeft === inflowLeft(design) ? 1 : -1;
 }
 
 /**
@@ -193,7 +201,7 @@ export function appendFordPavementOverlay(
 export function outletFillLine(design: CrossDesign): OffsetPoint[] {
   const edges = design.road_edges;
   if (!edges || !design.design_line?.length) return [];
-  const outward = design.section_mode !== "right_cut" ? -1 : 1; // +offset = 좌측 · 유입 반대
+  const outward = inflowLeft(design) ? -1 : 1; // +offset = 좌측 · 유입 반대
   const edge =
     outward > 0
       ? Math.max(edges.left.offset_m, edges.right.offset_m)
diff --git a/common_util/common_util_cross_design.ts b/common_util/common_util_cross_design.ts
index b9b99b1d8..b80dbd405 100644
--- a/common_util/common_util_cross_design.ts
+++ b/common_util/common_util_cross_design.ts
@@ -98,6 +98,8 @@ export interface CrossDesignOptions {
   ditchChoice?: boolean | null;
   /** 세월교 월류 높이만큼 노면을 통째로 내린다(m). */
   surfaceDropM?: number;
+  /** 물넘이포장 범위 안 측점 — 측구 없음(286-2). 짝: 파이썬 `compute_cross_design(ford_paved=…)`. */
+  fordPaved?: boolean;
   /** 이 측점의 평면 곡선반경(m) — 곡선부 확폭을 정하는 입력. 직선이면 null. */
   planRadiusM?: number | null;
   /** 곡선 **바깥쪽**("left"/"right") — 확폭이 붙는 쪽(2026-09-06 사용자 확정). */
@@ -187,6 +189,8 @@ export interface CrossDesignResult {
   /** 이 측점에 놓인 소단 제원 — 옹벽 의무 판정이 사면을 도막으로 끊는 데 쓴다. */
   berm?: { width_m: number; interval_m: number; slope_deg: number; depth_m?: number };
   surface_drop_m?: number;
+  /** 물넘이포장 범위 안 측점(286-2) — 측구 없음. */
+  ford_paved?: boolean;
   pavement_thickness_m?: number;
   rock_boundary_offset_m?: number;
 }
@@ -367,6 +371,7 @@ export function computeCrossDesign(
     berm: options.berm ?? null,
     shoulderExtendLeftM: options.shoulderExtendLeftM ?? 0,
     shoulderExtendRightM: options.shoulderExtendRightM ?? 0,
+    noDitch: Boolean(options.fordPaved),
   });
 
   // 적분 오프셋 = 지반 샘플 ∪ 설계 꼭짓점(샘플 범위 안쪽만).
@@ -581,6 +586,7 @@ export function computeCrossDesign(
     design_line: designLine,
     cut_slope_segments: geometry.cutSlopeSegments(),
   };
+  if (options.fordPaved) result.ford_paved = true;
   if (drop > 0) result.surface_drop_m = round4(drop);
   if (options.berm) {
     // 소단 제원을 설계에 되싣는다 — 짝 파이썬과 같은 까닭이고, **옹벽 의무 판정
diff --git a/common_util/common_util_cross_design_geometry.ts b/common_util/common_util_cross_design_geometry.ts
index b67b2d67e..e6704af6a 100644
--- a/common_util/common_util_cross_design_geometry.ts
+++ b/common_util/common_util_cross_design_geometry.ts
@@ -145,6 +145,8 @@ export class SectionGeometry {
     /** 설계선 쉬프트 = 쪽마다 노견 확장(m · ≥ 0 · 139-6). */
     shoulderExtendLeftM?: number;
     shoulderExtendRightM?: number;
+    /** 물넘이포장 자리 — 측구 없음(286-2 · 파이썬 짝 `no_ditch`). */
+    noDitch?: boolean;
   }) {
     const { group } = params;
     const halfRoad = group.road_width_m / 2;
@@ -213,6 +215,8 @@ export class SectionGeometry {
     this.hasDitch = choice === null || bothFill ? autoDitch : choice;
     /** 그 측점에 **사용자가 정한 선택**(없으면 자동). 결과와 갈라 내보낸다. */
     this.ditchChoice = bothFill ? null : choice;
+    // 물넘이포장 자리(286-2) — 파인 노면이라 측구가 안 섬 · 선택은 그대로(파이썬 짝)
+    if (params.noDitch) this.hasDitch = false;
 
     // 설계선 쉬프트 = 쪽마다 사면 이동(≥ 0 · 139-6 · 151-2) — 단면유형 · 측구 판정은 **옮기기 전**
     // 노견에서(위) · 노견(폭 고정) · 측구 · 사면이 같이 바깥으로 · 늘어난 폭은 차도. ⚠ 파이썬 짝 `_SectionGeometry`.
diff --git a/resources/tester/helper_286_1_ford_pavement.cjs b/resources/tester/helper_286_1_ford_pavement.cjs
index 8cbdde1bd..4174223a4 100644
--- a/resources/tester/helper_286_1_ford_pavement.cjs
+++ b/resources/tester/helper_286_1_ford_pavement.cjs
@@ -23,8 +23,30 @@ function loadTs(file, stubs = {}) {
 const input = JSON.parse(fs.readFileSync(process.argv[2], "utf8"));
 const station = loadTs(path.join(ROOT, "common_util", "common_util_structure_station.ts"));
 
+const ford = loadTs(path.join(ROOT, "B06_Section", "B06_Section_UI_Cross_Ford_Pavement.ts"), {
+  "./B06_Section_UI_Cross_Wall_Hatch": { appendChuteBand() {} },
+});
+// 286-2 노면 기울기 — 설계선 양 끝 표고가 높은 쪽 = 유입 · 표고 낮은 쪽(유출)으로 기움
+const SPEC = { span_m: 6, depth_m: 0.3, slope_pct: 5 };
+const designOf = (left, right, mode) => ({
+  design_elevation_m: 100,
+  cross_slope_pct: 2,
+  section_mode: mode,
+  design_line: [
+    { offset_m: -10, elevation_m: right },
+    { offset_m: 10, elevation_m: left },
+  ],
+});
+const deck = (design) => ({
+  left: ford.fordDeckElevationAt(design, SPEC, 3),
+  right: ford.fordDeckElevationAt(design, SPEC, -3),
+});
+
 const out = {
   fordMarks: station.pipeStationMarks({ chainage_m: 230, facility: "ford_pavement" }),
   planted: station.plantedChainages(input.pipes, input.structures, input.types),
+  deckLeftHigh: deck(designOf(105, 95, "right_cut")),
+  deckRightHigh: deck(designOf(95, 105, "left_cut")),
+  deckFlat: deck(designOf(100, 100, "right_cut")),
 };
 process.stdout.write(JSON.stringify(out));
diff --git a/resources/tester/test_286_1_ford_pavement_design.py b/resources/tester/test_286_1_ford_pavement_design.py
index 41018dbb9..30e2c247c 100644
--- a/resources/tester/test_286_1_ford_pavement_design.py
+++ b/resources/tester/test_286_1_ford_pavement_design.py
@@ -3,6 +3,8 @@
 못박는 것
   - 286-1 물넘이포장도 기준 측점 하나 — TS `pipeStationMarks` · `plantedChainages` ↔ 서버
     `resolve_extra_stations` 같은 값 · 라벨 「물넘이포장」 · B05 · B06 거름 걷음.
+  - 286-2 물넘이 자리 = 측구 없음(서버 정본 · 화면 짝 · 거울 = `test_b06_cross_design_mirror`) ·
+    노면 = 경사각도로 표고 낮은 쪽(설계선 양 끝 표고 · 같으면 단면유형).
 
 진짜 TS 는 `helper_286_1_ford_pavement.cjs` 가 Node 로 돌림. 화면은 사용자 확인.
 """
@@ -23,6 +25,8 @@ if str(ROOT) not in sys.path:
 
 from B05_Profile.B05_Profile_Engine_Sections import resolve_extra_stations  # noqa: E402
 from B05_Profile.B05_Profile_Structures_Schema import structure_type_map  # noqa: E402
+from B06_Section.B06_Section_Engine_Design import compute_cross_design  # noqa: E402
+from B06_Section.B06_Section_Router_Design import ford_pavement_ranges, paved_at  # noqa: E402
 from common_util.common_util_drainage_pipes import parse_pipe_points  # noqa: E402
 
 PIPES = [
@@ -82,3 +86,52 @@ def test_B05_B06_물넘이_거름_걷음():
     assert '"ford_pavement"' not in view
     drafts = _read("B06_Section", "B06_Section_Section_Drafts.ts")
     assert 'if (facility === "ford_pavement") return null;' not in drafts
+
+
+def _ground(slope: float) -> list[dict]:
+    return [
+        {"offset_m": o / 2, "elevation_m": round(100.0 + slope * o / 2, 4), "valid": True}
+        for o in range(-24, 25)
+    ]
+
+
+def test_물넘이_자리_측구_없음():
+    kwargs = {"ground_type": "soil", "section_mode": "left_cut", "ditch_side": "left"}
+    plain = compute_cross_design(_ground(0.35), 100.4, **kwargs)
+    ford = compute_cross_design(_ground(0.35), 100.4, ford_paved=True, **kwargs)
+    assert plain["ditch_enabled"] is True and "ford_paved" not in plain
+    assert ford["ditch_enabled"] is False and ford["ford_paved"] is True
+    assert ford["ditch_area_m2"] == 0
+    # 사용자가 측구를 켜도 물넘이 자리는 안 섬
+    forced = compute_cross_design(
+        _ground(0.35), 100.4, ford_paved=True, ditch_choice=True, **kwargs
+    )
+    assert forced["ditch_enabled"] is False
+
+
+def test_물넘이_범위_서버_판정(tmp_path):
+    edits = tmp_path / "B04_PreProcess" / "drainage" / "edits"
+    edits.mkdir(parents=True)
+    (edits / "pipe_points.json").write_text(
+        json.dumps({"points": [{**PIPES[1], "options": {"ford_width_m": 8}}]}), encoding="utf-8"
+    )
+    ranges = ford_pavement_ranges(tmp_path)
+    assert ranges == [(226.0, 234.0)]
+    assert paved_at(230.0, ranges) and paved_at(226.0, ranges) and not paved_at(240.0, ranges)
+
+
+def test_노면은_표고_낮은_쪽으로(ts):
+    # 좌 높음(입력 단면유형이 반대여도 지형) · 우 높음 · 같으면 단면유형(right_cut = 우 상류)
+    assert ts["deckLeftHigh"]["left"] > ts["deckLeftHigh"]["right"]
+    assert ts["deckRightHigh"]["right"] > ts["deckRightHigh"]["left"]
+    assert ts["deckFlat"]["right"] > ts["deckFlat"]["left"]
+    # 경사 5 % · 노선 중심 100 − 깊이 0.3 · 3 m 에서 ±0.15
+    assert ts["deckLeftHigh"]["left"] == pytest.approx(99.85)
+    assert ts["deckLeftHigh"]["right"] == pytest.approx(99.55)
+
+
+def test_저장_뒤_서버가_물넘이_측구를_맞춤():
+    router = _read("B06_Section", "B06_Section_Router_Design.py")
+    assert 'bool(design.get("ford_paved")) == ford_paved' in router
+    refresh = _read("B06_Section", "B06_Section_Cross_Refresh.ts")
+    assert "fordPaved: Boolean(section.ford_pavement)," in refresh
diff --git a/resources/tester/test_52_3_structure_spec_ford_pavement.py b/resources/tester/test_52_3_structure_spec_ford_pavement.py
index e5a020a1e..6162dece5 100644
--- a/resources/tester/test_52_3_structure_spec_ford_pavement.py
+++ b/resources/tester/test_52_3_structure_spec_ford_pavement.py
@@ -158,14 +158,15 @@ class Node {
 }
 globalThis.document = { createElementNS: (_ns, tag) => new Node(tag) };
 const pave = load(path.join(ROOT, "B06_Section/B06_Section_UI_Cross_Ford_Pavement.ts"));
-// +offset = 좌측 · 좌 성토 1:1.5 · 우 절토 오름 — 유입 = 좌(left_cut 아님) → 유출 = 우
-const design = (mode) => ({
+// +offset = 좌측 · 좌 성토 1:1.5 · 우 절토 오름 — 유입 = 표고 높은 쪽(설계선 끝 · 286-2) = 우 → 유출 = 좌
+// `rightEnd` = 우 끝 표고 — 좌 끝(97)과 같으면 단면유형으로 가름(left_cut = 유입 좌 → 유출 우)
+const design = (mode, rightEnd = 99) => ({
   section_mode: mode, cross_slope_pct: 2, design_elevation_m: 100, pavement_thickness_m: 0.2,
   road_edges: { left: { offset_m: 2.5, elevation_m: 100 }, right: { offset_m: -2.5, elevation_m: 100 } },
   design_line: [
     { offset_m: 7, elevation_m: 97 }, { offset_m: 2.5, elevation_m: 100 },
     { offset_m: -2.5, elevation_m: 100 }, { offset_m: -5.5, elevation_m: 98 },
-    { offset_m: -6.5, elevation_m: 98 }, { offset_m: -8, elevation_m: 99 },
+    { offset_m: -6.5, elevation_m: 98 }, { offset_m: -8, elevation_m: rightEnd },
   ],
 });
 const spec = { span_m: 9, depth_m: 0.3, slope_pct: 2, chute: { structure: "돌붙임", thickness_m: 0.3 } };
@@ -176,7 +177,7 @@ const run = (mode, withChute = true) => {
   return band ? band.attrs.points : null;
 };
 process.stdout.write(JSON.stringify({
-  outLeft: pave.outletFillLine(design("left_cut")), outRight: pave.outletFillLine(design("right_cut")),
+  outLeft: pave.outletFillLine(design("left_cut", 97)), outRight: pave.outletFillLine(design("left_cut")),
   band: run("left_cut"), none: run("left_cut", false),
 }));
 """
@@ -188,13 +189,14 @@ def test_유출측_성토사면_띠_136_2():
     )
     assert proc.returncode == 0, proc.stderr
     got = json.loads(proc.stdout)
-    # 유입 = 좌 → 유출 = 우(− 바깥) · 노견에서 내려가는 동안만(평지 · 오름에서 멈춤)
+    # 양 끝 같음 → 단면유형 left_cut = 유입 좌 → 유출 = 우(− 바깥) · 노견에서 내려가는 동안만
     assert got["outLeft"] == [
         {"offset": -2.5, "elevation": 100},
         {"offset": -5.5, "elevation": 98},
         {"offset": -6.5, "elevation": 98},
+        {"offset": -8, "elevation": 97},
     ]
-    # right_cut = 유입 우 → 유출 좌 성토 1:1.5
+    # 우 끝이 높음 = 유입 우(입력 left_cut 이어도 지형 · 286-2) → 유출 좌 성토 1:1.5
     assert got["outRight"] == [{"offset": 2.5, "elevation": 100}, {"offset": 7, "elevation": 97}]
-    assert got["band"] and got["band"].startswith("-2.5,100 -5.5,98")
+    assert got["band"] and got["band"].startswith("2.5,100 7,97")
     assert got["none"] is None
diff --git a/resources/tester/test_b06_cross_design_mirror.py b/resources/tester/test_b06_cross_design_mirror.py
index d5169229f..b3fe1763d 100644
--- a/resources/tester/test_b06_cross_design_mirror.py
+++ b/resources/tester/test_b06_cross_design_mirror.py
@@ -218,6 +218,19 @@ CASES = [
             "shoulder_extend_left_m": 0.4,
         },
     },
+    {
+        # 286-2 — 물넘이포장 자리 = 측구 없음(좌절토라 자동이면 측구가 섬)
+        "name": "물넘이포장 자리 측구 없음",
+        "samples": _ground(0.35),
+        "design_elevation_m": 100.4,
+        "options": {
+            "ground_type": "soil",
+            "section_mode": "left_cut",
+            "ditch_side": "left",
+            "paved": True,
+            "ford_paved": True,
+        },
+    },
 ]
 
 _TS_RUNNER = """
@@ -241,6 +254,7 @@ const camel = {
   curve_widening_m: "curveWideningM",
   shoulder_extend_left_m: "shoulderExtendLeftM",
   shoulder_extend_right_m: "shoulderExtendRightM",
+  ford_paved: "fordPaved",
 };
 // 사토장 제원만 칸 이름이 다르다 — 파이썬은 snake, TS 는 camel 이다.
 const spoilCamel = { side: "side", width_m: "widthM", slope_ratio_n: "slopeRatioN" };