US Bridges

Stephenson Rd. over Dry Wash

Good

Yakima County, Washington · 00.22 S.Branch Rd. · Structure no. 084445000000000

Built
1985
40 years old
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
572
2023 count
Owner
County
County Highway Agency

About this bridge

Stephenson Rd. over Dry Wash is a prestressed concrete stringer/multi-beam or girder carrying Stephenson Rd. over Dry Wash in Yakima County, Washington. It was built in 1985, so it is 40 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 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 572 vehicles a day, roughly 5% of them trucks, projected to reach 200 by 2043. The structure is 25 ft (7.6 m) long and 32 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesStephenson Rd.
CrossesDry Wash
Location00.22 S.Branch Rd.
RouteCounty Highway 55900
Coordinates46.40129, -120.69135
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating30 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span24 ft (7.3 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic572 (2023)
Projected traffic200 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed8.1 mi (13 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$1.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Stephenson Rd. over Dry Wash built?

It was built in 1985, making it 40 years old in 2025.

What condition is Stephenson Rd. over Dry Wash 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 January 2023.

How much traffic does Stephenson Rd. over Dry Wash carry?

About 572 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Stephenson Rd. over Dry Wash?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.3 m) and a deck 32 ft wide.

Who owns Stephenson Rd. over Dry Wash?

It is owned by the County Highway Agency.