US Bridges

Sudbury RD over Dry Run

Good

Walla Walla County, Washington · 50 Ft South of Olur RD · Structure no. 089453000000000

Built
2023
2 years old
Condition
Good
inspected September 2023
Type
Culvert
Steel
Length
24 ft
2 main spans
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

Sudbury RD over Dry Run is a steel culvert carrying Sudbury RD over Dry Run in Walla Walla County, Washington. It was built in 2023, so it is 2 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 100 vehicles a day, roughly 26% of them trucks, projected to reach 100 by 2043. The structure is 24 ft (7.3 m) long and 78 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesSudbury RD
CrossesDry Run
Location50 Ft South of Olur RD
RouteCounty Highway 93550
CountyWalla Walla County
StateWashington
Coordinates46.16778, -118.50478
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33 US tons
Inventory rating20 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadH 20
Structure length24 ft (7.3 m)
Longest span10 ft (3.1 m)
Deck width78 ft (23.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic100 by 2043
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed21.7 mi (35 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 relocation of road
Estimated improvement cost$1.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sudbury RD over Dry Run built?

It was built in 2023, making it 2 years old in 2025.

What condition is Sudbury RD over Dry Run 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 2023.

How much traffic does Sudbury RD over Dry Run carry?

About 100 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is Sudbury RD over Dry Run?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3.1 m) and a deck 78 ft wide.

Who owns Sudbury RD over Dry Run?

It is owned by the County Highway Agency.