US Bridges

Vandrewsey over Middle Fork Malheur Rive

Good

Harney County, Oregon · 131 MI C305 Drewsey Road · Structure no. 25E07 C30601307

Built
1975
50 years old
Condition
Good
inspected September 2024
Type
Slab
Prestressed Concrete
Length
81 ft
1 main span
Daily traffic
100
2020 count
Owner
County
County Highway Agency

About this bridge

Vandrewsey over Middle Fork Malheur Rive is a prestressed concrete slab carrying Vandrewsey over Middle Fork Malheur Rive in Harney County, Oregon. It was built in 1975, so it is 50 years old, older 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 100 vehicles a day, roughly 20% of them trucks, projected to reach 110 by 2025. The structure is 81 ft (24.7 m) long and 28 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

CarriesVandrewsey
CrossesMiddle Fork Malheur Rive
Location131 MI C305 Drewsey Road
RouteCounty Highway 0B476
StateOregon
Coordinates43.90146, -118.5821
Functional classRural Major 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 protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82 US tons
Inventory rating49.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length81 ft (24.7 m)
Longest span80 ft (24.4 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2020)
Projected traffic110 by 2025
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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 Vandrewsey over Middle Fork Malheur Rive built?

It was built in 1975, making it 50 years old in 2025.

What condition is Vandrewsey over Middle Fork Malheur Rive 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 September 2024.

How much traffic does Vandrewsey over Middle Fork Malheur Rive carry?

About 100 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is Vandrewsey over Middle Fork Malheur Rive?

The structure is 81 ft (24.7 m) long with a longest span of 80 ft (24.4 m) and a deck 28 ft wide.

Who owns Vandrewsey over Middle Fork Malheur Rive?

It is owned by the County Highway Agency.