US Bridges

Lat C Rd. over Marion Drain

GoodPosted for load

Yakima County, Washington · 0.01 N Marion Drn · Structure no. 081584000000000

Built
1990
35 years old
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
70 ft
1 main span
Daily traffic
172
2023 count
Owner
County
County Highway Agency

About this bridge

Lat C Rd. over Marion Drain is a prestressed concrete stringer/multi-beam or girder carrying Lat C Rd. over Marion Drain in Yakima County, Washington. It was built in 1990, so it is 35 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 172 vehicles a day, roughly 5% of them trucks, projected to reach 220 by 2043. The structure is 70 ft (21.3 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLat C Rd.
CrossesMarion Drain
Location0.01 N Marion Drn
RouteCounty Highway 50350
Coordinates46.34667, -120.52167
Functional classRural Minor Collector

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 statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating17.5 US tons
Inventory rating8.6 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadUnknown
Structure length70 ft (21.3 m)
Longest span69 ft (21 m)
Deck width32 ft (9.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic172 (2023)
Projected traffic220 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Lat C Rd. over Marion Drain built?

It was built in 1990, making it 35 years old in 2025.

What condition is Lat C Rd. over Marion Drain 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 Lat C Rd. over Marion Drain carry?

About 172 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Lat C Rd. over Marion Drain?

The structure is 70 ft (21.3 m) long with a longest span of 69 ft (21 m) and a deck 32 ft wide.

Who owns Lat C Rd. over Marion Drain?

It is owned by the County Highway Agency.