US Bridges

Gravelly Lake DR over Bnrr (np)

Poor

Pierce County, Washington · 9.7 N Thurston CO · Structure no. 0005943B0000000

Built
1959
66 years old
Condition
Poor
inspected November 2023
Type
Slab
Concrete
Length
27 ft
1 main span
Daily traffic
27,805
2002 count
Owner
State
State Highway Agency

About this bridge

Gravelly Lake DR over Bnrr (np) is a concrete slab carrying Gravelly Lake DR over Bnrr (np) in Pierce County, Washington. It was built in 1959, so it is 66 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 27,805 vehicles a day, roughly 5% of them trucks, projected to reach 53,330 by 2036. The structure is 27 ft (8.2 m) long and 67 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesGravelly Lake DR
CrossesBnrr (np)
Location9.7 N Thurston CO
RouteCity Street 5
CountyPierce County
StateWashington
Coordinates47.1375, -122.52589
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.2 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span25 ft (7.6 m)
Deck width67 ft (20.4 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,805 (2002)
Projected traffic53,330 by 2036
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$744,000 (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Gravelly Lake DR over Bnrr (np) built?

It was built in 1959, making it 66 years old in 2025.

What condition is Gravelly Lake DR over Bnrr (np) in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2023.

How much traffic does Gravelly Lake DR over Bnrr (np) carry?

About 27,805 vehicles per day (2002 count), of which roughly 5% are trucks.

How long is Gravelly Lake DR over Bnrr (np)?

The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.6 m) and a deck 67 ft wide.

Who owns Gravelly Lake DR over Bnrr (np)?

It is owned by the State Highway Agency.