US Bridges

Brown RD over Touchet River

Good

Walla Walla County, Washington · 0.49 South of SR 124 · Structure no. 086530000000000

Built
2000
25 years old
Condition
Good
inspected September 2024
Type
Tee Beam
Prestressed Concrete
Length
158 ft
1 main span
Daily traffic
80
2024 count
Owner
County
County Highway Agency

About this bridge

Brown RD over Touchet River is a prestressed concrete tee beam carrying Brown RD over Touchet River in Walla Walla County, Washington. It was built in 2000, so it is 25 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 80 vehicles a day, roughly 20% of them trucks, projected to reach 100 by 2046. The structure is 158 ft (48.2 m) long and 34 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesBrown RD
CrossesTouchet River
Location0.49 South of SR 124
RouteCounty Highway 65990
Coordinates46.2928, -118.31453
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.2 US tons
Inventory rating30.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length158 ft (48.2 m)
Longest span155 ft (47.2 m)
Deck width34 ft (10.5 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2024)
Projected traffic100 by 2046
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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$6.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Brown RD over Touchet River built?

It was built in 2000, making it 25 years old in 2025.

What condition is Brown RD over Touchet River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does Brown RD over Touchet River carry?

About 80 vehicles per day (2024 count), of which roughly 20% are trucks.

How long is Brown RD over Touchet River?

The structure is 158 ft (48.2 m) long with a longest span of 155 ft (47.2 m) and a deck 34 ft wide.

Who owns Brown RD over Touchet River?

It is owned by the County Highway Agency.