US Bridges

Lauer RD over Rocky Coulee

Fair

Adams County, Washington · 01.51 MI N Tokio RD · Structure no. 081590000000000

Built
1914
111 years old
Condition
Fair
inspected October 2024
Type
Other
Concrete
Length
34 ft
1 main span
Daily traffic
14
2018 count
Owner
County
County Highway Agency

About this bridge

Lauer RD over Rocky Coulee is a concrete other carrying Lauer RD over Rocky Coulee in Adams County, Washington. It was built in 1914, so it is 111 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.

It carries about 14 vehicles a day, roughly 6% of them trucks, projected to reach 17 by 2039. The structure is 34 ft (10.5 m) long and 22 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesLauer RD
CrossesRocky Coulee
Location01.51 MI N Tokio RD
RouteCounty Highway 63804
Coordinates47.22805, -118.72954
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
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating74 US tons
Inventory rating44 US tons

Structure

Structure typeOther
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length34 ft (10.5 m)
Longest span34 ft (10.5 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14 (2018)
Projected traffic17 by 2039
Trucks6%
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$1.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lauer RD over Rocky Coulee built?

It was built in 1914, making it 111 years old in 2025.

What condition is Lauer RD over Rocky Coulee 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 October 2024.

How much traffic does Lauer RD over Rocky Coulee carry?

About 14 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is Lauer RD over Rocky Coulee?

The structure is 34 ft (10.5 m) long with a longest span of 34 ft (10.5 m) and a deck 22 ft wide.

Who owns Lauer RD over Rocky Coulee?

It is owned by the County Highway Agency.