US Bridges

North Touchet Road over North Touchet River

Fair

Columbia County, Washington · 12.9 SE JCT SR 12 · Structure no. 081028000000000

Built
1973
52 years old
Condition
Fair
inspected October 2023
Type
Channel Beam
Prestressed Concrete
Length
46 ft
1 main span
Daily traffic
350
2019 count
Owner
County
County Highway Agency

About this bridge

North Touchet Road over North Touchet River is a prestressed concrete channel beam carrying North Touchet Road over North Touchet River in Columbia County, Washington. It was built in 1973, so it is 52 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 350 vehicles a day, roughly 15% of them trucks, projected to reach 500 by 2041. The structure is 46 ft (14 m) long and 30 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesNorth Touchet Road
CrossesNorth Touchet River
Location12.9 SE JCT SR 12
RouteCounty Highway 91150
CountyColumbia County
StateWashington
Coordinates46.1893, -117.82342
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
Deck7 GoodSome minor problems.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length46 ft (14 m)
Longest span46 ft (14 m)
Deck width30 ft (9.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2019)
Projected traffic500 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$1.4 million
NavigationNo navigation control on waterway

Frequently asked questions

When was North Touchet Road over North Touchet River built?

It was built in 1973, making it 52 years old in 2025.

What condition is North Touchet Road over North Touchet River 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 2023.

How much traffic does North Touchet Road over North Touchet River carry?

About 350 vehicles per day (2019 count), of which roughly 15% are trucks.

How long is North Touchet Road over North Touchet River?

The structure is 46 ft (14 m) long with a longest span of 46 ft (14 m) and a deck 30 ft wide.

Who owns North Touchet Road over North Touchet River?

It is owned by the County Highway Agency.