US Bridges

WAGNER/4110 over Imbler Creek

FairPosted for load

Whitman County, Washington · 0.17 MI E Davis · Structure no. 080101000000000

Built
1900
125 years old, rebuilt 1956
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
46 ft
2 main spans
Daily traffic
13
2022 count
Owner
County
County Highway Agency

About this bridge

WAGNER/4110 over Imbler Creek is a wood or timber stringer/multi-beam or girder carrying WAGNER/4110 over Imbler Creek in Whitman County, Washington. It was built in 1900 and reconstructed in 1956, so it is 125 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 13 vehicles a day, roughly 7% of them trucks, projected to reach 14 by 2042. The structure is 46 ft (14 m) long and 20 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesWAGNER/4110
CrossesImbler Creek
Location0.17 MI E Davis
RouteCounty Highway 41100
CountyWhitman County
StateWashington
Coordinates47.08857, -117.9145
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28 US tons
Inventory rating20 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadH 15
Structure length46 ft (14 m)
Longest span24 ft (7.3 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13 (2022)
Projected traffic14 by 2042
Trucks7%
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was WAGNER/4110 over Imbler Creek built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1956.

What condition is WAGNER/4110 over Imbler 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 November 2024.

How much traffic does WAGNER/4110 over Imbler Creek carry?

About 13 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is WAGNER/4110 over Imbler Creek?

The structure is 46 ft (14 m) long with a longest span of 24 ft (7.3 m) and a deck 20 ft wide.

Who owns WAGNER/4110 over Imbler Creek?

It is owned by the County Highway Agency.