US Bridges

SR 508 over Gheer Creek

Good

Lewis County, Washington · 7.6 E JCT I-5 · Structure no. 0003344A0000000

Built
1947
78 years old
Condition
Good
inspected March 2023
Type
Tee Beam
Concrete
Length
37 ft
1 main span
Daily traffic
4,376
2023 count
Owner
State
State Highway Agency

About this bridge

SR 508 over Gheer Creek is a concrete tee beam carrying SR 508 over Gheer Creek in Lewis County, Washington. It was built in 1947, so it is 78 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,376 vehicles a day, roughly 6% of them trucks, projected to reach 5,918 by 2039. The structure is 37 ft (11.3 m) long and 31 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesSR 508
CrossesGheer Creek
Location7.6 E JCT I-5
RouteState Highway 508
Coordinates46.57164, -122.73506
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length37 ft (11.3 m)
Longest span36 ft (11 m)
Deck width31 ft (9.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,376 (2023)
Projected traffic5,918 by 2039
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$562,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 508 over Gheer Creek built?

It was built in 1947, making it 78 years old in 2025.

What condition is SR 508 over Gheer Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does SR 508 over Gheer Creek carry?

About 4,376 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is SR 508 over Gheer Creek?

The structure is 37 ft (11.3 m) long with a longest span of 36 ft (11 m) and a deck 31 ft wide.

Who owns SR 508 over Gheer Creek?

It is owned by the State Highway Agency.