US Bridges

Ahtanum Road over Bachelor Creek

Fair

Yakima County, Washington · 00.08 W So 38th Ave · Structure no. 080052000000000

Built
1992
33 years old
Condition
Fair
inspected March 2023
Type
Slab
Prestressed Concrete
Length
26 ft
1 main span
Daily traffic
9,000
2023 count
Owner
County
County Highway Agency

About this bridge

Ahtanum Road over Bachelor Creek is a prestressed concrete slab carrying Ahtanum Road over Bachelor Creek in Yakima County, Washington. It was built in 1992, so it is 33 years old, younger 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 9,000 vehicles a day, roughly 7% of them trucks, projected to reach 11,000 by 2043. The structure is 26 ft (7.9 m) long and 48 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesAhtanum Road
CrossesBachelor Creek
Location00.08 W So 38th Ave
RouteCounty Highway 30260
Coordinates46.55833, -120.56
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.2 US tons
Inventory rating30 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width48 ft (14.6 m)
Roadway width47 ft (14.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,000 (2023)
Projected traffic11,000 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$1.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ahtanum Road over Bachelor Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is Ahtanum Road over Bachelor Creek 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 March 2023.

How much traffic does Ahtanum Road over Bachelor Creek carry?

About 9,000 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Ahtanum Road over Bachelor Creek?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 48 ft wide.

Who owns Ahtanum Road over Bachelor Creek?

It is owned by the County Highway Agency.