US Bridges

West Highland Ext. over Umatilla River

Fair

Umatilla County, Oregon · 1.0 MI W of HWY 207 · Structure no. 59C291120000367

Built
1966
59 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
248 ft
3 main spans
Daily traffic
8,447
2020 count
Owner
County
County Highway Agency

About this bridge

West Highland Ext. over Umatilla River is a prestressed concrete continuous stringer/multi-beam or girder carrying West Highland Ext. over Umatilla River in Umatilla County, Oregon. It was built in 1966, so it is 59 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 8,447 vehicles a day, roughly 40% of them trucks, projected to reach 9,802 by 2025. The structure is 248 ft (75.6 m) long and 38 ft wide. If it were closed, the detour would be 9.3 mi (15 km).

Location

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CarriesWest Highland Ext.
CrossesUmatilla River
Location1.0 MI W of HWY 207
RouteCounty Highway 0
CountyUmatilla County
StateOregon
Coordinates45.83546, -119.33291
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95 US tons
Inventory rating57 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length248 ft (75.6 m)
Longest span95 ft (29 m)
Deck width38 ft (11.6 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,447 (2020)
Projected traffic9,802 by 2025
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.3 mi (15 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 West Highland Ext. over Umatilla River built?

It was built in 1966, making it 59 years old in 2025.

What condition is West Highland Ext. over Umatilla River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does West Highland Ext. over Umatilla River carry?

About 8,447 vehicles per day (2020 count), of which roughly 40% are trucks.

How long is West Highland Ext. over Umatilla River?

The structure is 248 ft (75.6 m) long with a longest span of 95 ft (29 m) and a deck 38 ft wide.

Who owns West Highland Ext. over Umatilla River?

It is owned by the County Highway Agency.