US Bridges

Mclean Road over Wildhorse Creek

Fair

Umatilla County, Oregon · 0.05 MI N Wildhorse CR RD · Structure no. 59C408067500465

Built
1985
40 years old
Condition
Fair
inspected July 2023
Type
Slab
Prestressed Concrete
Length
39 ft
1 main span
Daily traffic
97
2020 count
Owner
County
County Highway Agency

About this bridge

Mclean Road over Wildhorse Creek is a prestressed concrete slab carrying Mclean Road over Wildhorse Creek in Umatilla County, Oregon. It was built in 1985, so it is 40 years old, younger 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 97 vehicles a day, roughly 15% of them trucks, projected to reach 113 by 2025. The structure is 39 ft (11.9 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesMclean Road
CrossesWildhorse Creek
Location0.05 MI N Wildhorse CR RD
RouteCounty Highway 0
CountyUmatilla County
StateOregon
Coordinates45.76257, -118.42602
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to 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 rating98 US tons
Inventory rating60 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span37 ft (11.3 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic97 (2020)
Projected traffic113 by 2025
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Mclean Road over Wildhorse Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Mclean Road 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 Mclean Road over Wildhorse Creek carry?

About 97 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is Mclean Road over Wildhorse Creek?

The structure is 39 ft (11.9 m) long with a longest span of 37 ft (11.3 m) and a deck 28 ft wide.

Who owns Mclean Road over Wildhorse Creek?

It is owned by the County Highway Agency.