Grant County, WA

314 public highway bridges

Grant County Bridge Snapshot

Grant County, Washington contains 314 public highway bridges in the FHWA National Bridge Inventory. Roughly 60.5% are rated “Good,” 30.3% “Fair,” 1.6% “Poor,” and 1.6% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in WA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

314
Total Bridges
60.5%
Good
1.6%
Poor
1.6%
Structurally Deficient

Condition Distribution

Good
60.5% (190)
Fair
30.3% (95)
Poor
1.6% (5)
SD
1.6% (5)

All Bridges (314)

SR 28

Good

Over: WEST CANAL

0.9 E JCT SR 281, Grant, WA

Built 1950 Load: 21.7 t ADT: 7,985

3 RD NW

Good

Over: IRRIGATION LATERAL

3 NW 0.03 East of SR 281, Grant, WA

Built 1952 Load: 21.8 t ADT: 110

MAINTENANCE ROAD

Good

Over: WEST CANAL W39.9

West Canal W39.9 Station, Grant, WA

Built 1950 Load: 22.1 t ADT: 40

23 ROAD NE

Good

Over: CRAB CREEK

01.6 E SR 28, Grant, WA

Built 1990 Load: 22.7 t ADT: 467

T RD NW

Good

Over: IRRIGATION LATERAL

T NW .5 N of 12, Grant, WA

Built 1952 Load: 22.7 t ADT: 197

SR 17

Good

Over: CANAL

8.3 N JCT SR 170, Grant, WA

Built 1954 Load: 23.0 t ADT: 8,845

FRENCHMAN HILLS RD

Good

Over: WEST CANAL

Frenchmen .2 E of Adams, Grant, WA

Built 1987 Load: 23.0 t ADT: 557

MAPLE STREET

Good

Over: WILSON CREEK

.1 MI E OF FOURTH, Grant, WA

Built 1979 Load: 23.0 t ADT: 30

GEORGE SOUTH ROAD

Good

Over: WEST CANAL BLK 78

Q SW 1.3 South of 3, Grant, WA

Built 1993 Load: 23.3 t ADT: 831

M Road SE

Good

Over: WW RCD BLK 42

M SE 0.1 S of 5.5 SE, Grant, WA

Built 1996 Load: 23.3 t ADT: 1,184

SPILLWAY ACCESS

Good

Over: WINCHESTER WASTEWAY

NR WINCHESTER, WA, Grant, WA

Built 1948 Load: 23.7 t ADT: 5

SR 155

Good

Over: NORTHRUP CR

19.1 N JCT US 2, Grant, WA

Built 1949 Load: 23.7 t ADT: 1,142

DODSON ROAD

Good

Over: CANAL LATERAL

Dodson 1.3 N of 9 NW, Grant, WA

Built 1981 Load: 23.7 t ADT: 1,567

L ROAD SW

Good

Over: LAT. W61C BLK 81

Adams .4 South of 9 SW, Grant, WA

Built 1964 Load: 23.7 t ADT: 1,412

ADAMS ROAD

Good

Over: WEST CANAL BLK 78

Adams .1 N of Frenchmen, Grant, WA

Built 1994 Load: 23.7 t ADT: 1,237

12 RD NW

Good

Over: WEST CANAL

Martin Rd 0.1 W of SR 28, Grant, WA

Built 1994 Load: 23.7 t ADT: 825

Q SW

Good

Over: WEST CANAL BLK 78

Q SW .1 South of 1.5, Grant, WA

Built 1993 Load: 23.7 t ADT: 877

FRENCHMAN HILLS RD

Good

Over: WEST CANAL TUNNEL WW

Frenchmen Hill 1.2 E of I, Grant, WA

Built 1962 Load: 24.3 t ADT: 368

5 RD SE

Good

Over: IRRIGATION WASTEWAY

5 SE .4 West of M SE, Grant, WA

Built 1987 Load: 24.3 t ADT: 203

M NE

Good

Over: EAST LOW CANAL BLK 40

M NE 0.2 South of 10 NE, Grant, WA

Built 1996 Load: 24.3 t ADT: 443

FEISS RD

Good

Over: CON NA WAI CREEK

Fiess Rd 0.01 W of X NE, Grant, WA

Built 2000 Load: 24.3 t ADT: 56

SR 17

Good

Over: PARKER HORN

0.3 N JCT SR 171, Grant, WA

Built 1955 Load: 24.5 t ADT: 19,362

N RD SW

Good

Over: IRRIGATION LATERAL

N SW @ 12.5, Grant, WA

Built 1958 Load: 24.5 t ADT: 74

SR 281

Good

Over: WEST CANAL

9.9 N JCT I-90, Grant, WA

Built 1950 Load: 24.6 t ADT: 8,193

White Trail Rd

Good

Over: WINCHESTER WW

5 NW 0.05 W of G.9, Grant, WA

Built 1953 Load: 24.6 t ADT: 558

A NE

Good

Over: WEST CANAL BLK 70

A NE 1.23 N of SR 28, Grant, WA

Built 1988 Load: 24.6 t ADT: 226

G RD SW

Good

Over: WAHLUKE BRANCH CANAL

G SW .4 N of Wahluke Rd, Grant, WA

Built 1969 Load: 24.6 t ADT: 772

L ROAD SW

Good

Over: LAT. RB5 BLK 82

Adams Rd 0.9 S of 12 SW, Grant, WA

Built 1990 Load: 24.6 t ADT: 875

D Road SE

Good

Over: Irrigation Canal

D SE .9 mile S of 13 SE, Grant, WA

Built 2009 Load: 24.6 t ADT: 391

U ROAD SE

Good

Over: S. WARDEN COULEE

U SE .6 S of 10 SE, Grant, WA

Built 1960 Load: 24.9 t ADT: 1,373

K NE

Good

Over: ROCKY COULEE WW

K NE 1.8 South of 7 NE, Grant, WA

Built 1984 Load: 25.3 t ADT: 1,320

PINTO RIDGE ROAD

Good

Over: MAIN CANAL

Pinto Ridge .5 N of SR 28, Grant, WA

Built 1992 Load: 25.3 t ADT: 530

29 NE

Good

Over: WILSON CREEK

29 NE 4.02 East of R NE, Grant, WA

Built 1998 Load: 25.3 t ADT: 24

E RD SE

Good

Over: IRRIGATION LATERAL

E SE at 14.8, Grant, WA

Built 1959 Load: 25.4 t ADT: 80

D RD SW

Good

Over: IRRIGATION LATERAL

D SW 0.7 S of Frenchmen, Grant, WA

Built 1959 Load: 25.4 t ADT: 214

9 RD NW

Good

Over: IRRIGATION LATERAL

9 NW 0.3 E of S NW, Grant, WA

Built 1952 Load: 25.4 t ADT: 265

A RD SW

Good

Over: IRRIGATION LATERAL

A SW 0.5 N of 11 SW, Grant, WA

Built 1954 Load: 25.4 t ADT: 264

1 SE RD

Good

Over: ROCKY COULEE DRAIN

1 SE 0.8 West of M SE, Grant, WA

Built 2000 Load: 25.6 t ADT: 292

P RD NE

Good

Over: ROCKY COULEE

P NE 0.6 N of 6 NE, Grant, WA

Built 1974 Load: 25.9 t ADT: 160

SR 155

Good

Over: UPPER LEWIS CR

14.4 N JCT US 2, Grant, WA

Built 1949 Load: 26.6 t ADT: 959

F RD NW

Good

Over: WEST CANAL

F NW .8 S Martin Rd, Grant, WA

Built 1953 Load: 26.6 t ADT: 59

BEVERLY BURKE RD

Good

Over: WEST CANAL BLK 77

BEVERLY BURKE @ 1 NW, Grant, WA

Built 1987 Load: 26.6 t ADT: 1,452

J RD NE

Good

Over: MAIN CANAL

J NE 0.5 N of SR 28, Grant, WA

Built 1992 Load: 26.9 t ADT: 175

M Road SE

Good

Over: WW RCD BLK 42

M SE .5 South of 2 SE, Grant, WA

Built 1996 Load: 26.9 t ADT: 1,109

S RD SE

Good

Over: IRRIGATION LATERAL

S SE 0.4 S of SR 170, Grant, WA

Built 1952 Load: 27.2 t ADT: 196

N ROAD NE

Good

Over: LAT. BLK 41

N NE .5 North of I-90, Grant, WA

Built 1960 Load: 27.5 t ADT: 910

11 ROAD SW

Good

Over: ROYAL BRANCH CANAL BLK82

11 SW 0.7 E of K SW, Grant, WA

Built 1987 Load: 27.5 t ADT: 600

R NE

Good

Over: DRY CREEK

R NE .2 South of 39 NE, Grant, WA

Built 1994 Load: 27.5 t ADT: 250

T RD SE

Good

Over: EAST LOW CANAL

T SE .2 North of 7 SE, Grant, WA

Built 1984 Load: 27.9 t ADT: 49

L ROAD NE

Good

Over: ROCKY COULEE WW BLK 41

L NE .05 North of 5.6 NE, Grant, WA

Built 1983 Load: 27.9 t ADT: 1,271

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial