US Bridges

Mud Creek RD over Mud Creek

Good

Walla Walla County, Washington · 0.214 SE of SR 12 · Structure no. 089166000000000

Built
2020
5 years old
Condition
Good
inspected September 2024
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
23 ft
1 main span
Daily traffic
82
2024 count
Owner
County
County Highway Agency

About this bridge

Mud Creek RD over Mud Creek is a aluminum, wrought iron, or cast iron culvert carrying Mud Creek RD over Mud Creek in Walla Walla County, Washington. It was built in 2020, so it is 5 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 82 vehicles a day, roughly 5% of them trucks, projected to reach 120 by 2046. The structure is 23 ft (7.1 m) long and 60 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesMud Creek RD
CrossesMud Creek
Location0.214 SE of SR 12
RouteCounty Highway 76200
Coordinates46.14631, -118.1402
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating41.4 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans1
Design loadHL 93
Structure length23 ft (7.1 m)
Longest span23 ft (7.1 m)
Deck width60 ft (18.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic82 (2024)
Projected traffic120 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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$1.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mud Creek RD over Mud Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is Mud Creek RD over Mud 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 Mud Creek RD over Mud Creek carry?

About 82 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Mud Creek RD over Mud Creek?

The structure is 23 ft (7.1 m) long with a longest span of 23 ft (7.1 m) and a deck 60 ft wide.

Who owns Mud Creek RD over Mud Creek?

It is owned by the County Highway Agency.