US Bridges

US 12 over SR 823 (n 1st St)

Good

Yakima County, Washington · 16.9 E JCT SR 410 · Structure no. 0008616A0000000

Built
1969
56 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
212 ft
3 main spans
Daily traffic
16,048
2023 count
Owner
State
State Highway Agency

About this bridge

US 12 over SR 823 (n 1st St) is a prestressed concrete continuous stringer/multi-beam or girder carrying US 12 over SR 823 (n 1st St) in Yakima County, Washington. It was built in 1969, so it is 56 years old, older 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.

It carries about 16,048 vehicles a day, roughly 12% of them trucks, projected to reach 19,084 by 2039. The structure is 212 ft (64.6 m) long and 48 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 12
CrossesSR 823 (n 1st St)
Location16.9 E JCT SR 410
RouteU.S. Route 12
CountyYakima County
StateWashington
Coordinates46.62603, -120.51233
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Substructure7 GoodSome minor problems.
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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30.3 US tons
Inventory rating23.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length212 ft (64.6 m)
Longest span116 ft (35.4 m)
Deck width48 ft (14.7 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,048 (2023)
Projected traffic19,084 by 2039
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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$4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 12 over SR 823 (n 1st St) built?

It was built in 1969, making it 56 years old in 2025.

What condition is US 12 over SR 823 (n 1st St) 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 April 2023.

How much traffic does US 12 over SR 823 (n 1st St) carry?

About 16,048 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is US 12 over SR 823 (n 1st St)?

The structure is 212 ft (64.6 m) long with a longest span of 116 ft (35.4 m) and a deck 48 ft wide.

Who owns US 12 over SR 823 (n 1st St)?

It is owned by the State Highway Agency.