US Bridges

US 12 over Abandoned RR Grade

Fair

Walla Walla County, Washington · 11.5 E JCT SR 124 · Structure no. 000000MH0000000

Built
1953
72 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
145 ft
3 main spans
Daily traffic
8,735
2023 count
Owner
State
State Highway Agency

About this bridge

US 12 over Abandoned RR Grade is a steel stringer/multi-beam or girder carrying US 12 over Abandoned RR Grade in Walla Walla County, Washington. It was built in 1953, so it is 72 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 8,735 vehicles a day, roughly 26% of them trucks, projected to reach 9,549 by 2039. The structure is 145 ft (44.2 m) long and 35 ft wide. If it were closed, the detour would be 29.2 mi (47 km).

Location

Open in Google Maps
CarriesUS 12
CrossesAbandoned RR Grade
Location11.5 E JCT SR 124
RouteU.S. Route 12
CountyWalla Walla County
StateWashington
Coordinates46.06828, -118.90803
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating43 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length145 ft (44.2 m)
Longest span48 ft (14.6 m)
Deck width35 ft (10.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,735 (2023)
Projected traffic9,549 by 2039
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesOther
Detour if closed29.2 mi (47 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.5 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 12 over Abandoned RR Grade built?

It was built in 1953, making it 72 years old in 2025.

What condition is US 12 over Abandoned RR Grade 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 April 2023.

How much traffic does US 12 over Abandoned RR Grade carry?

About 8,735 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is US 12 over Abandoned RR Grade?

The structure is 145 ft (44.2 m) long with a longest span of 48 ft (14.6 m) and a deck 35 ft wide.

Who owns US 12 over Abandoned RR Grade?

It is owned by the State Highway Agency.