US Bridges

11th Street over Pine Creek

Good

Whitman County, Washington · 0.10 N Broadway ST · Structure no. 086006000000000

Built
1992
33 years old
Condition
Good
inspected January 2024
Type
Tee Beam
Prestressed Concrete
Length
87 ft
1 main span
Daily traffic
50
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

11th Street over Pine Creek is a prestressed concrete tee beam carrying 11th Street over Pine Creek in Whitman County, Washington. It was built in 1992, so it is 33 years old, younger 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 50 vehicles a day, roughly 1% of them trucks, projected to reach 51 by 2044. The structure is 87 ft (26.4 m) long and 17 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Carries11th Street
CrossesPine Creek
Location0.10 N Broadway ST
RouteCity Street 730
Coordinates47.23213, -117.46763
Functional classUrban Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.1 US tons
Inventory rating28.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length87 ft (26.4 m)
Longest span84 ft (25.6 m)
Deck width17 ft (5.1 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2021)
Projected traffic51 by 2044
Trucks1%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$986,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 11th Street over Pine Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is 11th Street over Pine 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 January 2024.

How much traffic does 11th Street over Pine Creek carry?

About 50 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is 11th Street over Pine Creek?

The structure is 87 ft (26.4 m) long with a longest span of 84 ft (25.6 m) and a deck 17 ft wide.

Who owns 11th Street over Pine Creek?

It is owned by the City or Municipal Highway Agency.