US Bridges

Steptoe Can 9280 over Steptoe Creek

Good

Whitman County, Washington · 7.54 MI SE RD 9270 · Structure no. 088971000000000

Built
2017
8 years old
Condition
Good
inspected January 2024
Type
Slab
Prestressed Concrete
Length
32 ft
1 main span
Daily traffic
3
2021 count
Owner
County
County Highway Agency

About this bridge

Steptoe Can 9280 over Steptoe Creek is a prestressed concrete slab carrying Steptoe Can 9280 over Steptoe Creek in Whitman County, Washington. It was built in 2017, so it is 8 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3 vehicles a day, roughly 1% of them trucks, projected to reach 6 by 2044. The structure is 32 ft (9.8 m) long and 30 ft wide. If it were closed, the detour would be 70.2 mi (113 km).

CarriesSteptoe Can 9280
CrossesSteptoe Creek
Location7.54 MI SE RD 9270
RouteCounty Highway 92800
Coordinates46.45457, -117.19364
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating55.3 US tons
Inventory rating37.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3 (2021)
Projected traffic6 by 2044
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed70.2 mi (113 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$1.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Steptoe Can 9280 over Steptoe Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is Steptoe Can 9280 over Steptoe 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 Steptoe Can 9280 over Steptoe Creek carry?

About 3 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Steptoe Can 9280 over Steptoe Creek?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 30 ft wide.

Who owns Steptoe Can 9280 over Steptoe Creek?

It is owned by the County Highway Agency.