US Bridges

US 26 (hwy 026) over Salmon River

Fair

Clackamas County, Oregon · 10.0 MI E of Sandy Ecl · Structure no. 08522 026 03726

Built
1972
53 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
447 ft
4 main spans
Daily traffic
12,006
2022 count
Owner
State
State Highway Agency

About this bridge

US 26 (hwy 026) over Salmon River is a prestressed concrete continuous stringer/multi-beam or girder carrying US 26 (hwy 026) over Salmon River in Clackamas County, Oregon. It was built in 1972, so it is 53 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 12,006 vehicles a day, roughly 17% of them trucks, projected to reach 16,200 by 2042. The structure is 447 ft (136.2 m) long and 86 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesUS 26 (hwy 026)
CrossesSalmon River
Location10.0 MI E of Sandy Ecl
RouteU.S. Route 26
CountyClackamas County
StateOregon
Coordinates45.37255, -122.02071
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18.5 US tons
Inventory rating14.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length447 ft (136.2 m)
Longest span140 ft (42.7 m)
Deck width86 ft (26.3 m)
Roadway width83 ft (25.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,006 (2022)
Projected traffic16,200 by 2042
Trucks17%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$2.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was US 26 (hwy 026) over Salmon River built?

It was built in 1972, making it 53 years old in 2025.

What condition is US 26 (hwy 026) over Salmon 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 May 2023.

How much traffic does US 26 (hwy 026) over Salmon River carry?

About 12,006 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is US 26 (hwy 026) over Salmon River?

The structure is 447 ft (136.2 m) long with a longest span of 140 ft (42.7 m) and a deck 86 ft wide.

Who owns US 26 (hwy 026) over Salmon River?

It is owned by the State Highway Agency.