US Bridges

Yost Rd. over Marion Drain

Fair

Yakima County, Washington · 00 01 N Marion Drn · Structure no. 081562000000000

Built
1980
45 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
65 ft
1 main span
Daily traffic
83
2023 count
Owner
County
County Highway Agency

About this bridge

Yost Rd. over Marion Drain is a prestressed concrete stringer/multi-beam or girder carrying Yost Rd. over Marion Drain in Yakima County, Washington. It was built in 1980, so it is 45 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 6 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 83 vehicles a day, roughly 5% of them trucks, projected to reach 98 by 2043. The structure is 65 ft (19.8 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesYost Rd.
CrossesMarion Drain
Location00 01 N Marion Drn
RouteCounty Highway 50600
Coordinates46.34667, -120.50167
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating23.3 US tons
Inventory rating16.4 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length65 ft (19.8 m)
Longest span61 ft (18.6 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic83 (2023)
Projected traffic98 by 2043
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$2.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Yost Rd. over Marion Drain built?

It was built in 1980, making it 45 years old in 2025.

What condition is Yost Rd. over Marion Drain 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 February 2023.

How much traffic does Yost Rd. over Marion Drain carry?

About 83 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Yost Rd. over Marion Drain?

The structure is 65 ft (19.8 m) long with a longest span of 61 ft (18.6 m) and a deck 32 ft wide.

Who owns Yost Rd. over Marion Drain?

It is owned by the County Highway Agency.