US Bridges

Duncan SPRING/8020 over Rebel Flat Creek

Good

Whitman County, Washington · 0.12 MI W Almota · Structure no. 086504000000000

Built
1996
29 years old
Condition
Good
inspected December 2023
Type
Culvert
Steel
Length
21 ft
2 main spans
Daily traffic
267
2021 count
Owner
County
County Highway Agency

About this bridge

Duncan SPRING/8020 over Rebel Flat Creek is a steel culvert carrying Duncan SPRING/8020 over Rebel Flat Creek in Whitman County, Washington. It was built in 1996, so it is 29 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 267 vehicles a day, roughly 40% of them trucks, projected to reach 272 by 2044. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesDuncan SPRING/8020
CrossesRebel Flat Creek
Location0.12 MI W Almota
RouteCounty Highway 80200
CountyWhitman County
StateWashington
Coordinates46.84123, -117.40202
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.3 US tons
Inventory rating65.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic267 (2021)
Projected traffic272 by 2044
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$259,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Duncan SPRING/8020 over Rebel Flat Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is Duncan SPRING/8020 over Rebel Flat 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 December 2023.

How much traffic does Duncan SPRING/8020 over Rebel Flat Creek carry?

About 267 vehicles per day (2021 count), of which roughly 40% are trucks.

How long is Duncan SPRING/8020 over Rebel Flat Creek?

The structure is 21 ft (6.4 m) long with a longest span of 9 ft (2.7 m).

Who owns Duncan SPRING/8020 over Rebel Flat Creek?

It is owned by the County Highway Agency.