US Bridges

SR 26 over Cmstpp RR

Fair

Adams County, Washington · 9.3 E Grant CO · Structure no. 0005114A0000000

Built
1956
69 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Concrete Continuous
Length
229 ft
4 main spans
Daily traffic
7,360
2023 count
Owner
State
State Highway Agency

About this bridge

SR 26 over Cmstpp RR is a concrete continuous tee beam carrying SR 26 over Cmstpp RR in Adams County, Washington. It was built in 1956, so it is 69 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 7,360 vehicles a day, roughly 15% of them trucks, projected to reach 8,895 by 2039. The structure is 229 ft (69.8 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR 26
CrossesCmstpp RR
Location9.3 E Grant CO
RouteState Highway 26
CountyAdams County
StateWashington
Coordinates46.81147, -119.17961
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.1 US tons
Inventory rating18.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length229 ft (69.8 m)
Longest span73 ft (22.3 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,360 (2023)
Projected traffic8,895 by 2039
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$4.4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 26 over Cmstpp RR built?

It was built in 1956, making it 69 years old in 2025.

What condition is SR 26 over Cmstpp RR 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 February 2024.

How much traffic does SR 26 over Cmstpp RR carry?

About 7,360 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is SR 26 over Cmstpp RR?

The structure is 229 ft (69.8 m) long with a longest span of 73 ft (22.3 m) and a deck 35 ft wide.

Who owns SR 26 over Cmstpp RR?

It is owned by the State Highway Agency.