US Bridges

Allen Road over Sulpher Creek Wasteway

Good

Yakima County, Washington · 00.19 E of Penn Rd. · Structure no. 084256000000000

Built
1983
42 years old
Condition
Good
inspected December 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
82 ft
1 main span
Daily traffic
1,720
2020 count
Owner
County
County Highway Agency

About this bridge

Allen Road over Sulpher Creek Wasteway is a prestressed concrete stringer/multi-beam or girder carrying Allen Road over Sulpher Creek Wasteway in Yakima County, Washington. It was built in 1983, so it is 42 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 1,720 vehicles a day, roughly 5% of them trucks, projected to reach 2,025 by 2040. The structure is 82 ft (25 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesAllen Road
CrossesSulpher Creek Wasteway
Location00.19 E of Penn Rd.
RouteCounty Highway 61960
Coordinates46.30833, -119.98667
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 inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30 US tons
Inventory rating15 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length82 ft (25 m)
Longest span80 ft (24.4 m)
Deck width32 ft (9.7 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,720 (2020)
Projected traffic2,025 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$3.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Allen Road over Sulpher Creek Wasteway built?

It was built in 1983, making it 42 years old in 2025.

What condition is Allen Road over Sulpher Creek Wasteway 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 December 2022.

How much traffic does Allen Road over Sulpher Creek Wasteway carry?

About 1,720 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Allen Road over Sulpher Creek Wasteway?

The structure is 82 ft (25 m) long with a longest span of 80 ft (24.4 m) and a deck 32 ft wide.

Who owns Allen Road over Sulpher Creek Wasteway?

It is owned by the County Highway Agency.