US Bridges

Eightmile Road over Eightmile Creek

Fair

Wasco County, Oregon · 1.6 MI S. of HWY 197 · Structure no. 65C42A181 00144

Built
1997
28 years old
Condition
Fair
inspected August 2024
Type
Slab
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
239
2020 count
Owner
County
County Highway Agency

About this bridge

Eightmile Road over Eightmile Creek is a prestressed concrete slab carrying Eightmile Road over Eightmile Creek in Wasco County, Oregon. It was built in 1997, so it is 28 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 239 vehicles a day, roughly 5% of them trucks, projected to reach 254 by 2025. The structure is 43 ft (13.1 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesEightmile Road
CrossesEightmile Creek
Location1.6 MI S. of HWY 197
RouteCounty Highway 0
CountyWasco County
StateOregon
Coordinates45.51199, -121.1212
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 protection7 GoodSome minor problems.
Last inspectionAugust 2024
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 rating70 US tons
Inventory rating42 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 15
Structure length43 ft (13.1 m)
Longest span42 ft (12.8 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic239 (2020)
Projected traffic254 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Eightmile Road over Eightmile Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is Eightmile Road over Eightmile 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 August 2024.

How much traffic does Eightmile Road over Eightmile Creek carry?

About 239 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Eightmile Road over Eightmile Creek?

The structure is 43 ft (13.1 m) long with a longest span of 42 ft (12.8 m) and a deck 29 ft wide.

Who owns Eightmile Road over Eightmile Creek?

It is owned by the County Highway Agency.