US Bridges

Long Road over West Fork Marys River

Good

Benton County, Oregon · 003 MI E of Hoskins RD · Structure no. 20731 176 00003

Built
2008
17 years old
Condition
Good
inspected July 2024
Type
Slab
Prestressed Concrete
Length
51 ft
1 main span
Daily traffic
71
2020 count
Owner
County
County Highway Agency

About this bridge

Long Road over West Fork Marys River is a prestressed concrete slab carrying Long Road over West Fork Marys River in Benton County, Oregon. It was built in 2008, so it is 17 years old, younger than the Oregon average of 49.9 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 71 vehicles a day, roughly 1% of them trucks, projected to reach 116 by 2040. The structure is 51 ft (15.5 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesLong Road
CrossesWest Fork Marys River
Location003 MI E of Hoskins RD
RouteCounty Highway 0
StateOregon
Coordinates44.64061, -123.56748
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51.8 US tons
Inventory rating40 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length51 ft (15.5 m)
Longest span50 ft (15.2 m)
Deck width28 ft (8.6 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic71 (2020)
Projected traffic116 by 2040
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Long Road over West Fork Marys River built?

It was built in 2008, making it 17 years old in 2025.

What condition is Long Road over West Fork Marys River 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 July 2024.

How much traffic does Long Road over West Fork Marys River carry?

About 71 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Long Road over West Fork Marys River?

The structure is 51 ft (15.5 m) long with a longest span of 50 ft (15.2 m) and a deck 28 ft wide.

Who owns Long Road over West Fork Marys River?

It is owned by the County Highway Agency.