US Bridges

Rush Creek Road over Spring Creek

Fair

Washington County, Idaho · 0.3 N. 1.0 W. Cambridge · Structure no. 000000000028770

Built
1979
46 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Prestressed Concrete
Length
27 ft
1 main span
Daily traffic
150
2023 count
Owner
County
County Highway Agency

About this bridge

Rush Creek Road over Spring Creek is a prestressed concrete tee beam carrying Rush Creek Road over Spring Creek in Washington County, Idaho. It was built in 1979, so it is 46 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 150 vehicles a day, roughly 7% of them trucks, projected to reach 225 by 2042. The structure is 27 ft (8.2 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRush Creek Road
CrossesSpring Creek
Location0.3 N. 1.0 W. Cambridge
RouteCounty Highway 0
CountyWashington County
StateIdaho
Coordinates44.57589, -116.69642
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30 US tons
Inventory rating18 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 15
Structure length27 ft (8.2 m)
Longest span21 ft (6.4 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2023)
Projected traffic225 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$342,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Rush Creek Road over Spring Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is Rush Creek Road over Spring Creek 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 July 2024.

How much traffic does Rush Creek Road over Spring Creek carry?

About 150 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Rush Creek Road over Spring Creek?

The structure is 27 ft (8.2 m) long with a longest span of 21 ft (6.4 m) and a deck 24 ft wide.

Who owns Rush Creek Road over Spring Creek?

It is owned by the County Highway Agency.