US Bridges

13 S 09 W 23.01: over North Fork Alsea River

Good

Lincoln County, Oregon · 1.2 Miles E of Harlan or · Structure no. 0000000L1439336

Built
1976
49 years old
Condition
Good
inspected March 2024
Type
Slab
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
50
2024 count
Owner
Federal
Bureau of Land Management

About this bridge

13 S 09 W 23.01: over North Fork Alsea River is a prestressed concrete slab carrying 13 S 09 W 23.01: over North Fork Alsea River in Lincoln County, Oregon. It was built in 1976, so it is 49 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, roughly 1% of them trucks, projected to reach 75 by 2044. The structure is 63 ft (19.2 m) long and 16 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Carries13 S 09 W 23.01:
CrossesNorth Fork Alsea River
Location1.2 Miles E of Harlan or
RouteFederal Lands Road 0
StateOregon
Coordinates44.47778, -123.65389
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating40.7 US tons
Inventory rating31.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length63 ft (19.2 m)
Longest span60 ft (18.3 m)
Deck width16 ft (4.8 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic75 by 2044
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Land Management
Maintained byBureau of Land Management
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost$3,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 13 S 09 W 23.01: over North Fork Alsea River built?

It was built in 1976, making it 49 years old in 2025.

What condition is 13 S 09 W 23.01: over North Fork Alsea River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2024.

How much traffic does 13 S 09 W 23.01: over North Fork Alsea River carry?

About 50 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is 13 S 09 W 23.01: over North Fork Alsea River?

The structure is 63 ft (19.2 m) long with a longest span of 60 ft (18.3 m) and a deck 16 ft wide.

Who owns 13 S 09 W 23.01: over North Fork Alsea River?

It is owned by the Bureau of Land Management.