US Bridges

8 Av S over Tacoma Rail Mtn Div Oc

Fair

Pierce County, Washington · .4 S JCT SR 507 · Structure no. 080852000000000

Built
1965
60 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete
Length
113 ft
3 main spans
Daily traffic
4,025
2024 count
Owner
County
County Highway Agency

About this bridge

8 Av S over Tacoma Rail Mtn Div Oc is a concrete tee beam carrying 8 Av S over Tacoma Rail Mtn Div Oc in Pierce County, Washington. It was built in 1965, so it is 60 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 4,025 vehicles a day, roughly 5% of them trucks, projected to reach 6,650 by 2045. The structure is 113 ft (34.4 m) long and 30 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
Carries8 Av S
CrossesTacoma Rail Mtn Div Oc
Location.4 S JCT SR 507
RouteCounty Highway 94110
CountyPierce County
StateWashington
Coordinates47.07972, -122.44333
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating41 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length113 ft (34.4 m)
Longest span35 ft (10.7 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,025 (2024)
Projected traffic6,650 by 2045
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.5 million (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 8 Av S over Tacoma Rail Mtn Div Oc built?

It was built in 1965, making it 60 years old in 2025.

What condition is 8 Av S over Tacoma Rail Mtn Div Oc in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does 8 Av S over Tacoma Rail Mtn Div Oc carry?

About 4,025 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is 8 Av S over Tacoma Rail Mtn Div Oc?

The structure is 113 ft (34.4 m) long with a longest span of 35 ft (10.7 m) and a deck 30 ft wide.

Who owns 8 Av S over Tacoma Rail Mtn Div Oc?

It is owned by the County Highway Agency.