US Bridges

North Bank Road over Salmon River

Fair

Lincoln County, Oregon · 005 MI North Rose Lodge · Structure no. 12007A 201 379

Built
1972
53 years old
Condition
Fair
inspected September 2024
Type
Slab
Prestressed Concrete
Length
136 ft
3 main spans
Daily traffic
673
2020 count
Owner
County
County Highway Agency

About this bridge

North Bank Road over Salmon River is a prestressed concrete slab carrying North Bank Road over Salmon River in Lincoln 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 5 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 673 vehicles a day, roughly 10% of them trucks, projected to reach 900 by 2040. The structure is 136 ft (41.5 m) long and 24 ft wide.

CarriesNorth Bank Road
CrossesSalmon River
Location005 MI North Rose Lodge
RouteCounty Highway 0
StateOregon
Coordinates45.01137, -123.88531
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating41.8 US tons
Inventory rating32.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHS 20
Structure length136 ft (41.5 m)
Longest span66 ft (20.1 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic673 (2020)
Projected traffic900 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
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 North Bank Road over Salmon River built?

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

What condition is North Bank Road 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 September 2024.

How much traffic does North Bank Road over Salmon River carry?

About 673 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is North Bank Road over Salmon River?

The structure is 136 ft (41.5 m) long with a longest span of 66 ft (20.1 m) and a deck 24 ft wide.

Who owns North Bank Road over Salmon River?

It is owned by the County Highway Agency.