US Bridges

Commercial Street over Wildhorse Creek

Fair

Umatilla County, Oregon · O.15 MI W of HWY 11 · Structure no. 59C568082500383

Built
1924
101 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete Continuous
Length
59 ft
3 main spans
Daily traffic
562
2020 count
Owner
County
County Highway Agency

About this bridge

Commercial Street over Wildhorse Creek is a concrete continuous tee beam carrying Commercial Street over Wildhorse Creek in Umatilla County, Oregon. It was built in 1924, so it is 101 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 6 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 562 vehicles a day, roughly 20% of them trucks, projected to reach 587 by 2025. The structure is 59 ft (18 m) long and 22 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesCommercial Street
CrossesWildhorse Creek
LocationO.15 MI W of HWY 11
RouteCounty Highway 0
StateOregon
Coordinates45.76864, -118.55925
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length59 ft (18 m)
Longest span30 ft (9.1 m)
Deck width22 ft (6.7 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic562 (2020)
Projected traffic587 by 2025
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$302,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Commercial Street over Wildhorse Creek built?

It was built in 1924, making it 101 years old in 2025.

What condition is Commercial Street over Wildhorse Creek 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 2023.

How much traffic does Commercial Street over Wildhorse Creek carry?

About 562 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is Commercial Street over Wildhorse Creek?

The structure is 59 ft (18 m) long with a longest span of 30 ft (9.1 m) and a deck 22 ft wide.

Who owns Commercial Street over Wildhorse Creek?

It is owned by the County Highway Agency.