US Bridges

US 26 (hwy 005) over Riley Creek

Fair

Grant County, Oregon · 021 MI W JCT US 395 · Structure no. 01042 005 15189

Built
1965
60 years old
Condition
Fair
inspected May 2023
Type
Slab
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
1,377
2022 count
Owner
State
State Highway Agency

About this bridge

US 26 (hwy 005) over Riley Creek is a prestressed concrete slab carrying US 26 (hwy 005) over Riley Creek in Grant County, Oregon. It was built in 1965, so it is 60 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 1,377 vehicles a day, roughly 28% of them trucks, projected to reach 1,500 by 2042. The structure is 25 ft (7.6 m) long and 36 ft wide. If it were closed, the detour would be 42.3 mi (68 km).

Location

Open in Google Maps
CarriesUS 26 (hwy 005)
CrossesRiley Creek
Location021 MI W JCT US 395
RouteU.S. Route 26
CountyGrant County
StateOregon
Coordinates44.41561, -119.15572
Functional classRural Principal Arterial - Other

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 protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.3 US tons
Inventory rating34.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,377 (2022)
Projected traffic1,500 by 2042
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed42.3 mi (68 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 26 (hwy 005) over Riley Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is US 26 (hwy 005) over Riley 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 May 2023.

How much traffic does US 26 (hwy 005) over Riley Creek carry?

About 1,377 vehicles per day (2022 count), of which roughly 28% are trucks.

How long is US 26 (hwy 005) over Riley Creek?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 36 ft wide.

Who owns US 26 (hwy 005) over Riley Creek?

It is owned by the State Highway Agency.