Thurston County, WA

216 public highway bridges

Thurston County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Thurston County, Washington contains 216 public highway bridges. Roughly 44.4% are rated “Good,” 30.1% “Fair,” and 0.5% “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.

216

Total Bridges

44.4%

Good

30.1%

Fair

0.5%

Poor Condition

Condition Distribution

Good

44.4% (96)

Fair

30.1% (65)

Poor

0.5% (1)

All Bridges (216)

Sort:

N P RAILROAD

Over: MULLEN ROAD

.7 m W Marvin Rd, Thurston, WA

Built 1950 ADT: 5,211

PARKS PED. TRAIL

Over: YELM HIGHWAY

.5 m W of College St, Thurston, WA

Built 1998 ADT: 24,000

CHEHALIS WEST TR

Over: MARTINWAY

0.3 W OF SLEATER KINNEY, Thurston, WA

Built 2010 ADT: 24,466

CHEHALIS WESTRN TR

Over: PACIFIC AVE.

0.3 WEST OF SLEATER KINNE, Thurston, WA

Built 2014 ADT: 24,185

W 5TH AVENUE

Over: BNRR

5TH AVENUE, Thurston, WA

Built 1958 Load: 10.7 t ADT: 16,790

HOLMES ISD RD

Over: LONG LAKE

OVER LONG LAKE, Thurston, WA

Built 1962 Load: 16.3 t ADT: 177

I-5

Over: NISQUALLY OVERFLOW

2.7 N JCT SR 510, Thurston, WA

Built 1968 Load: 19.4 t ADT: 48,169

YELM HWY S.E.

Over: RAILROAD

Lacey Cily Limit, Thurston, WA

Built 1951 Load: 20.0 t ADT: 12,500

CAPITOL BOULEVARD

Over: DESCHUTES R. & OWRR&N R.

00.23 N. E STREET, Thurston, WA

Built 1936 Load: 20.0 t ADT: 14,881

5TH AVE

Over: CAPITOL LAKE

1.2 N I-5, Thurston, WA

Built 1948 Load: 24.5 t ADT: 19,640

DELPHI ROAD SW

Over: MCLANE CREEK

.15 m S of Cedar Flats Rd, Thurston, WA

Built 1924 Load: 25.4 t ADT: 2,612

STEAMBOAT IS. RD.

Over: TOTTEN INLET

STEAMBOAT ISLAND, Thurston, WA

Built 1982 Load: 25.4 t ADT: 146

US 12

Over: SLOUGH

2.6 E GRAYS HBR CO, Thurston, WA

Built 1926 Load: 27.2 t ADT: 11,343

US 12

Over: SLOUGH

1.5 E GRAYS HBR CO, Thurston, WA

Built 1926 Load: 27.5 t ADT: 9,817

I-5

Over: NISQUALLY RIVER

2.9 N JCT SR 510, Thurston, WA

Built 1967 Load: 29.9 t ADT: 61,580

SR 507

Over: NISQUALLY RIVER

2.4 N JCT SR 510, Thurston, WA

Built 1987 Load: 31.4 t ADT: 21,833

TONO ROAD

Over: SKOOKUMCHUCK RIVER

0.4 m E of Hwy 507, Thurston, WA

Built 1972 Load: 31.7 t ADT: 333

NISQUALLY CUTOFF

Over: OVERFLOW CHANNEL

.2 E JCT I5, Thurston, WA

Built 1936 Load: 31.7 t ADT: 5,226

OLD HWY NO. 9

Over: PRAIRIE CREEK

0.8 m NW Old Hwy 99, Thurston, WA

Built 1936 Load: 32.7 t ADT: 3,433

WOODARD BAY ROAD

Over: WOODARD BAY

0.6 m E Libby Rd, Thurston, WA

Built 1958 Load: 32.7 t ADT: 1,137

MOON ROAD

Over: BLACK RIVER

1. N JCT SR12, Thurston, WA

Built 1976 Load: 32.7 t ADT: 1,003

VAIL CUTOFF RD

Over: DESCHUTES RIVER

100 ft W Vail Loop Rd, Thurston, WA

Built 1956 Load: 32.7 t ADT: 1,079

I-5

Over: NISQUALLY OVERFLOW-SOUTH

2.7 N JCT SR 510, Thurston, WA

Built 1982 Load: 33.4 t ADT: 48,169

I-5

Over: NISQUALLY RIVER

2.9 N JCT SR 510, Thurston, WA

Built 1937 Load: 33.6 t ADT: 61,580

JOHNSON CREEK ROAD

Over: JOHNSON CREEK

1.8 m N Skookumchuck Rd, Thurston, WA

Built 1977 Load: 33.6 t ADT: 324

I-5

Over: MCALLISTER CR

2.2 N JCT SR 510, Thurston, WA

Built 1968 Load: 33.7 t ADT: 2,096

US 101

Over: SCHNEIDER CREEK

2.7 S MASON CO, Thurston, WA

Built 1958 Load: 34.5 t ADT: 13,023

LEITNER ST.

Over: SCATTER CREEK

0.33 m S of 176th Ave SW, Thurston, WA

Built 1978 Load: 34.5 t ADT: 282

COOPER POINT ROAD

Over: PERCIVAL CREEK AND BNRR

0.1 N EVERGREEN DR, Thurston, WA

Built 1986 Load: 34.7 t ADT: 24,550

I-5

Over: OWR N RR

1.0 N JCT US 101, Thurston, WA

Built 1957 Load: 36.3 t ADT: 137,442

US 101

Over: MUD BAY

1.3 S JCT SR 8, Thurston, WA

Built 1958 Load: 36.3 t ADT: 20,937

HENDERSON BLVD

Over: DESCHUTES RIVER

0.55 mile S Yelm Hwy, Thurston, WA

Built 1961 Load: 36.3 t ADT: 13,945

Madrona Beach Road

Over: PERRY CREEK

0.6 W Mud Bay Rd, Thurston, WA

Built 1958 Load: 36.3 t ADT: 1,325

STEILACOOM ROAD

Over: MCALLISTER CREEK

2.0 m S of I-5 on ramp, Thurston, WA

Built 1964 Load: 36.3 t ADT: 1,384

US 101

Over: MUD BAY

1.3 S JCT SR 8, Thurston, WA

Built 1958 Load: 36.9 t ADT: 20,937

188 SW

Over: OVERFLOW CHANNEL

700 ft W Marble St SW, Thurston, WA

Built 1981 Load: 38.1 t ADT: 291

SCH. LND. RD. CULV

Over: OVERFLOW CHANNEL

600' W Forstom St., Thurston, WA

Built 1981 Load: 38.1 t ADT: 345

ENDICOTT ROAD

Over: CREEK

0.6 m W of Delphi Int., Thurston, WA

Built 1958 Load: 38.6 t ADT: 458

US 12

Over: SCATTER CREEK

4.5 E GRAYS HBR CO, Thurston, WA

Built 1926 Load: 38.9 t ADT: 13,012

SR 507

Over: TACOMA RAIL RR

1.8 N JCT SR 510, Thurston, WA

Built 1982 Load: 39.0 t ADT: 14,693

BOSTON STREET

Over: DESCHUTES RIVER

00.10 S. CUSTER WAY, Thurston, WA

Built 1915 Load: 39.9 t ADT: 7,400

US 101

Over: PERCIVAL CR & BNRR

4.5 S JCT SR 8, Thurston, WA

Built 1995 Load: 40.8 t ADT: 37,225

CASE ROAD SW

Over: SCATTER CREEK

0.7 m N of 183rd Ave SW, Thurston, WA

Built 1965 Load: 40.8 t ADT: 2,751

SR 507

Over: DESCHUTES RIVER

15.0 N LEWIS CO, Thurston, WA

Built 1943 Load: 41.7 t ADT: 5,063

INDEPENDENCE ROAD

Over: CHEHALIS RIVER

Over the Chehalis River, Thurston, WA

Built 1976 Load: 42.6 t ADT: 1,409

LITTLEROCK RD.

Over: CREEK

3.9 N SR 12, Thurston, WA

Built 1951 Load: 43.5 t ADT: 3,164

OLD HWY 99 SW

Over: SCATTER CREEK

WEST OF TENINO NEAR TRAC, Thurston, WA

Built 1923 Load: 44.4 t ADT: 5,042

MARTIN WAY EAST

Over: MC ALLISTER CREEK

.23 m SW of Nisqually Cu, Thurston, WA

Built 2000 Load: 44.4 t ADT: 17,895

128TH AVE SW

Over: BLACK RIVER

.23 W OF LITTLEROCK RD, Thurston, WA

Built 1968 Load: 45.4 t ADT: 3,047

183RD SW

Over: SCATTER CREEK

0.5 m W of Sargent Rd Int, Thurston, WA

Built 1949 Load: 45.4 t ADT: 2,813

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

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

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Compiled by PlainBridges, Independent data publisher

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.