US Bridges

Marion Drain over Toppenish Creek

GoodPosted for load

Yakima County, Washington · 00.61 E of Pom Pom · Structure no. 082125000000000

Built
1983
42 years old
Condition
Good
inspected December 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
51 ft
1 main span
Daily traffic
95
2020 count
Owner
County
County Highway Agency

About this bridge

Marion Drain over Toppenish Creek is a prestressed concrete stringer/multi-beam or girder carrying Marion Drain over Toppenish Creek 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. Its operating status is: posted for load restriction.

It carries about 95 vehicles a day, roughly 5% of them trucks, projected to reach 110 by 2040. The structure is 51 ft (15.5 m) long and 32 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesMarion Drain
CrossesToppenish Creek
Location00.61 E of Pom Pom
RouteCounty Highway 50900
Coordinates46.34632, -120.69876
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 statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating15.3 US tons
Inventory rating10 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span48 ft (14.6 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic95 (2020)
Projected traffic110 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$2.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Marion Drain over Toppenish Creek built?

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

What condition is Marion Drain over Toppenish Creek 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 Marion Drain over Toppenish Creek carry?

About 95 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Marion Drain over Toppenish Creek?

The structure is 51 ft (15.5 m) long with a longest span of 48 ft (14.6 m) and a deck 32 ft wide.

Who owns Marion Drain over Toppenish Creek?

It is owned by the County Highway Agency.