US Bridges

Ladow BUTTE/1500 over Cedar Creek

Fair

Whitman County, Washington · 0.08 MI N SR 27 · Structure no. 081771000000000

Built
1971
54 years old
Condition
Fair
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
187
2021 count
Owner
County
County Highway Agency

About this bridge

Ladow BUTTE/1500 over Cedar Creek is a prestressed concrete tee beam carrying Ladow BUTTE/1500 over Cedar Creek in Whitman County, Washington. It was built in 1971, so it is 54 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 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 187 vehicles a day, roughly 3% of them trucks, projected to reach 207 by 2044. The structure is 40 ft (12.2 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesLadow BUTTE/1500
CrossesCedar Creek
Location0.08 MI N SR 27
RouteCounty Highway 15000
CountyWhitman County
StateWashington
Coordinates46.96473, -117.09418
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span38 ft (11.6 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic187 (2021)
Projected traffic207 by 2044
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$1.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ladow BUTTE/1500 over Cedar Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is Ladow BUTTE/1500 over Cedar 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 2023.

How much traffic does Ladow BUTTE/1500 over Cedar Creek carry?

About 187 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Ladow BUTTE/1500 over Cedar Creek?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.6 m) and a deck 24 ft wide.

Who owns Ladow BUTTE/1500 over Cedar Creek?

It is owned by the County Highway Agency.