US Bridges

Lower Waitsburg RD over Dry Creek

GoodPosted for load

Walla Walla County, Washington · 05.18N SR 12 · Structure no. 082892000000000

Built
1980
45 years old
Condition
Good
inspected September 2024
Type
Tee Beam
Concrete
Length
85 ft
1 main span
Daily traffic
720
2024 count
Owner
County
County Highway Agency

About this bridge

Lower Waitsburg RD over Dry Creek is a concrete tee beam carrying Lower Waitsburg RD over Dry Creek in Walla Walla County, Washington. It was built in 1980, so it is 45 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 720 vehicles a day, roughly 13% of them trucks, projected to reach 880 by 2046. The structure is 85 ft (25.9 m) long and 31 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesLower Waitsburg RD
CrossesDry Creek
Location05.18N SR 12
RouteCounty Highway 96110
Coordinates46.15445, -118.31486
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30.8 US tons
Inventory rating16.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length85 ft (25.9 m)
Longest span81 ft (24.7 m)
Deck width31 ft (9.5 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic720 (2024)
Projected traffic880 by 2046
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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$3.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lower Waitsburg RD over Dry Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is Lower Waitsburg RD over Dry Creek 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 Lower Waitsburg RD over Dry Creek carry?

About 720 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is Lower Waitsburg RD over Dry Creek?

The structure is 85 ft (25.9 m) long with a longest span of 81 ft (24.7 m) and a deck 31 ft wide.

Who owns Lower Waitsburg RD over Dry Creek?

It is owned by the County Highway Agency.