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:

NP RY

Over: STATE ROUTE 507

8.2 N LEWIS CO, Thurston, WA

Built 1935 ADT: 9,082

CMSTPP RR

Over: STATE ROUTE 507

18.0 N LEWIS CO, Thurston, WA

Built 1936 ADT: 8,095

CUSTER WAY

Over: I-5, DESCHUTES RIVER

4.7 N JCT SR 121, Thurston, WA

Built 1956 ADT: 99,802

I-5

Over: DESCHUTES PARKWAY

5.0 N JCT SR 121, Thurston, WA

Built 1956 ADT: 16,138

CAPITOL BLVD

Over: I-5, RAMP

0.7 N JCT US 101, Thurston, WA

Built 1956 ADT: 99,802

I-5 RAMPS

Over: HENDERSON BLVD, UPRR

1.2 N JCT US 101, Thurston, WA

Built 1957 ADT: 16,866

I-5 S-W RAMP

Over: HENDERSON BLVD, RR

1.2 N JCT US 101, Thurston, WA

Built 1957 ADT: 16,866

I-5

Over: HENDERSON BLVD

1.2 N JCT US 101, Thurston, WA

Built 1957 ADT: 10,302

DELPHI RD

Over: US 101

1.8 S JCT SR 8, Thurston, WA

Built 1958 ADT: 41,873

I-5

Over: PACIFIC AVE

3.4 N JCT US 101, Thurston, WA

Built 1957 ADT: 20,913

SR 8

Over: US 101

4.6 S MASON CO, Thurston, WA

Built 1958 ADT: 16,101

SR 8

Over: US 101

4.6 S MASON CO, Thurston, WA

Built 1958 ADT: 16,101

I-5

Over: MARTIN WAY

5.0 N JCT US 101, Thurston, WA

Built 1967 ADT: 48,714

I-5

Over: MARTIN WAY

5.0 N JCT US 101, Thurston, WA

Built 1967 ADT: 48,714

CARPENTER RD

Over: I-5

6.4 N JCT US 101, Thurston, WA

Built 1967 ADT: 113,497

MERIDIAN RD

Over: I-5

1.2 N JCT SR 510, Thurston, WA

Built 1968 ADT: 99,770

I-5

Over: MCALLISTER CR

2.2 N JCT SR 510, Thurston, WA

Built 1968 ADT: 1,912

I-5

Over: MCALLISTER CREEK

2.2 N JCT SR 510, Thurston, WA

Built 1968 ADT: 1,912

I-5 S-E RAMP

Over: I-5 MAINLINE

2.4 N JCT SR 510, Thurston, WA

Built 1968 ADT: 96,338

216TH AVE SW

Over: I-5, RR

0.8 N LEWIS CO, Thurston, WA

Built 1968 ADT: 69,601

183RD AVE SW

Over: I-5

1.5 N JCT US 12, Thurston, WA

Built 1968 ADT: 66,693

113TH AVE SW

Over: I-5

2.0 N JCT SR 121, Thurston, WA

Built 1968 ADT: 68,115

SR 121 / 93RD AVE

Over: I-5

JCT SR 121, Thurston, WA

Built 1968 ADT: 64,115

EVERGREEN PARKWAY

Over: US 101

2.4 S JCT SR 8, Thurston, WA

Built 1975 ADT: 41,873

COOPER PT RD

Over: US 101

5.0 S JCT SR 8, Thurston, WA

Built 1976 ADT: 71,170

2nd AVE SW

Over: US 101

1.2 S JCT SR 8, Thurston, WA

Built 1976 ADT: 40,428

BOULEVARD RD

Over: I-5

2.6 N JCT US 101, Thurston, WA

Built 1984 ADT: 136,911

14TH AVE

Over: I-5

1.2 N JCT US 101, Thurston, WA

Built 1986 ADT: 137,442

I-5 ON RAMP

Over: HENDERSON BLVD

1.2 N JCT US 101, Thurston, WA

Built 1986 ADT: 10,302

PLUM ST-N RAMP

Over: I-5

1.2 N JCT US 101, Thurston, WA

Built 1986 ADT: 118,213

SLEATER-KINNEY RD

Over: I-5

4.3 N JCT US 101, Thurston, WA

Built 1987 ADT: 128,811

TUMWATER BLVD

Over: I-5

2.0 N JCT SR 121, Thurston, WA

Built 1986 ADT: 69,251

I-5

Over: PACIFIC AVE.

3.3 N JCT US 101, Thurston, WA

Built 1988 ADT: 20,913

PEDESTRIANS

Over: I-5

2.7 N JCT SR 121, Thurston, WA

Built 1987 ADT: 83,796

COLLEGE ST

Over: I-5

4.8 N JCT US 101, Thurston, WA

Built 1988 ADT: 110,242

LILLY ROAD

Over: I-5

3.8 N JCT US 101, Thurston, WA

Built 1988 ADT: 128,811

EASTSIDE STREET

Over: I-5

1.2 N JCT US 101, Thurston, WA

Built 1988 ADT: 118,213

US 101 NB

Over: I-5, RAMPS, STREET

5.0 N JCT SR 121, Thurston, WA

Built 1990 ADT: 99,802

E-S RAMP

Over: S-S RAMP

5.0 N JCT SR 121, Thurston, WA

Built 1990 ADT: 2,866

KAISER ROAD

Over: US 101

2.6 S JCT SR 8, Thurston, WA

Built 1989 ADT: 41,873

TROSPER RD

Over: I-5

3.5 N JCT SR 121, Thurston, WA

Built 1991 ADT: 83,796

ISRAEL RD

Over: I-5

2.4 N JCT SR 121, Thurston, WA

Built 1990 ADT: 69,251

STEAMBOAT ISL RD

Over: US 101 & SCHNEIDER CREEK

2.7 S MASON CO, Thurston, WA

Built 1995 ADT: 26,046

SR 510 (MARVIN RD)

Over: I-5

7.7 N JCT US 101, Thurston, WA

Built 2001 ADT: 84,306

CHEHALIS PED TRAIL

Over: I-5

4.0 N JCT US 101, Thurston, WA

Built 2007 ADT: 128,811

I-5

Over: SR 121 & RAILROAD

JCT I-5, Thurston, WA

Built 2010 ADT: 3,914

US 12

Over: I-5

JCT US 12, Thurston, WA

Built 2011 ADT: 55,210

PEDESTRIANS

Over: CAPITOL WAY

CAPITOL WAY S, Thurston, WA

Built 1973 ADT: 16,088

BNRR Main Line

Over: RAINIER RD.

0.3 S 70th Way, Thurston, WA

Built 1920 ADT: 8,230

RAILROAD

Over: OLD 99

3.4 N JCT SR507, Thurston, WA

Built 1922 ADT: 6,729

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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