US Bridges

Agency Mnt. Road over Vale Agency Valley Dam

Good

Malheur County, Oregon · 60 MI W of Vale Oregon · Structure no. 15AGN001

Built
1933
92 years old
Condition
Good
inspected September 2024
Type
Slab
Concrete
Length
59 ft
3 main spans
Daily traffic
10
2022 count
Owner
Federal
Bureau of Reclamation

About this bridge

Agency Mnt. Road over Vale Agency Valley Dam is a concrete slab carrying Agency Mnt. Road over Vale Agency Valley Dam in Malheur County, Oregon. It was built in 1933, so it is 92 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 10 vehicles a day, roughly 10% of them trucks, projected to reach 20 by 2042. The structure is 59 ft (18 m) long and 22 ft wide.

CarriesAgency Mnt. Road
CrossesVale Agency Valley Dam
Location60 MI W of Vale Oregon
RouteFederal Lands Road 0
StateOregon
Coordinates43.91104, -118.15787
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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating65 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length59 ft (18 m)
Longest span18 ft (5.5 m)
Deck width22 ft (6.8 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)
Projected traffic20 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Reclamation
Maintained byOther Local 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 Agency Mnt. Road over Vale Agency Valley Dam built?

It was built in 1933, making it 92 years old in 2025.

What condition is Agency Mnt. Road over Vale Agency Valley Dam 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 Agency Mnt. Road over Vale Agency Valley Dam carry?

About 10 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Agency Mnt. Road over Vale Agency Valley Dam?

The structure is 59 ft (18 m) long with a longest span of 18 ft (5.5 m) and a deck 22 ft wide.

Who owns Agency Mnt. Road over Vale Agency Valley Dam?

It is owned by the Bureau of Reclamation and maintained by the Other Local Agency.