Grant County, WA

314 public highway bridges

Grant County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Grant County, Washington contains 314 public highway bridges. Roughly 60.5% are rated “Good,” 30.3% “Fair,” and 1.6% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

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

314
Total Bridges
60.5%
Good
30.3%
Fair
1.6%
Poor Condition

Condition Distribution

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

All Bridges (314)

40 RD NE

Good

Over: DRY CREEK

40 NE .2 W of S NE, Grant, WA

Built 1981 Load: 96.9 t ADT: 67

SAGEBRUSH FLATS RD

Good

Over: DRY WASH

0.1 E of JOHNSON RD, Grant, WA

Built 1993 Load: 96.9 t ADT: 670

SAGEBRUSH FLATS RD

Good

Over: DRY WASH

Sagebrush .1 W of City, Grant, WA

Built 1993 Load: 96.9 t ADT: 734

16 NE

Good

Over: Crab Creek

16 NE 4.0 W of Stratford, Grant, WA

Built 2010 Load: 96.9 t ADT: 157

R NE

Good

Over: Dry Wash

R NE .2 South of 34 NE, Grant, WA

Built 2013 Load: 96.9 t ADT: 262

MAINTENANCE ROAD

Good

Over: MAIN CANAL

MAIN CANAL 3.88, Grant, WA

Built 1977 Load: 97.8 t ADT: 10

MAINTENANCE ROAD

Good

Over: WEST CANAL

Frenchman Hills WW, 5 mi, Grant, WA

Built 2008 Load: 99.9 t ADT: 10

East Low Canal

Good

Over: East Low Canal

Weber Branch Siphon, Grant, WA

Built 1950 Load: 99.9 t ADT: 1

East Low Canal

Good

Over: East Low Canal

Weber Coulee Siphon Inlet, Grant, WA

Built 1950 Load: 99.9 t ADT: 1

MI 2.8 THOMPSON

Poor

Over: ROCKY COULEE WASTEWAY

NR MOSES LAKE,WA, Grant, WA

Built 1950 Load: 7.5 t ADT: 10

M Road SE

Poor

Over: EL 29 Waste Way

M SE 0.01 N of 5 SE, Grant, WA

Built 1980 Load: 16.8 t ADT: 2,094

SO. FRONTAGE RD.

Poor

Over: WEST CANAL

West Canal @ George, Grant, WA

Built 1950 Load: 23.0 t ADT: 687

I-90

Poor

Over: WEST CANAL

12.3 E JCT SR 26, Grant, WA

Built 1964 Load: 27.5 t ADT: 5,419

I-90

Poor

Over: WEST CANAL

12.3 E JCT SR 26, Grant, WA

Built 1964 Load: 41.7 t ADT: 5,419

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

Related

Browse all → | Rankings →
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.