US Bridges

HARPER-WESTFALC805 over Vale Canal

Good

Malheur County, Oregon · 033 M NW Harper School · Structure no. 20282 080500832

Built
2005
20 years old
Condition
Good
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
104 ft
1 main span
Daily traffic
181
2020 count
Owner
County
County Highway Agency

About this bridge

HARPER-WESTFALC805 over Vale Canal is a prestressed concrete tee beam carrying HARPER-WESTFALC805 over Vale Canal in Malheur County, Oregon. It was built in 2005, so it is 20 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 181 vehicles a day, roughly 10% of them trucks, projected to reach 211 by 2025. The structure is 104 ft (31.7 m) long and 34 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesHARPER-WESTFALC805
CrossesVale Canal
Location033 M NW Harper School
RouteCounty Highway 0B497
StateOregon
Coordinates43.89233, -117.64526
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating47.2 US tons
Inventory rating36.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length104 ft (31.7 m)
Longest span101 ft (30.8 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic181 (2020)
Projected traffic211 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 HARPER-WESTFALC805 over Vale Canal built?

It was built in 2005, making it 20 years old in 2025.

What condition is HARPER-WESTFALC805 over Vale Canal 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 2023.

How much traffic does HARPER-WESTFALC805 over Vale Canal carry?

About 181 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is HARPER-WESTFALC805 over Vale Canal?

The structure is 104 ft (31.7 m) long with a longest span of 101 ft (30.8 m) and a deck 34 ft wide.

Who owns HARPER-WESTFALC805 over Vale Canal?

It is owned by the County Highway Agency.