US Bridges

Road over Alsea River

Good

Lincoln County, Oregon · No Data Entered · Structure no. 061205000001168

Built
1959
66 years old
Condition
Good
inspected August 2023
Type
Frame
Concrete Continuous
Length
260 ft
3 main spans
Daily traffic
10
1996 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over Alsea River is a concrete continuous frame carrying Road over Alsea River in Lincoln County, Oregon. It was built in 1959, so it is 66 years old, older 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 10 vehicles a day, projected to reach 15 by 2045. The structure is 260 ft (79.2 m) long and 18 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

Open in Google Maps
CarriesRoad
CrossesAlsea River
LocationNo Data Entered
RouteFederal Lands Road 58000
CountyLincoln County
StateOregon
Coordinates44.39927, -123.85236
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 protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating25 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadH 20
Structure length260 ft (79.2 m)
Longest span80 ft (24.4 m)
Deck width18 ft (5.6 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (1996)
Projected traffic15 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed620.7 mi (999 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Road over Alsea River built?

It was built in 1959, making it 66 years old in 2025.

What condition is Road over 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 August 2023.

How much traffic does Road over Alsea River carry?

About 10 vehicles per day (1996 count).

How long is Road over Alsea River?

The structure is 260 ft (79.2 m) long with a longest span of 80 ft (24.4 m) and a deck 18 ft wide.

Who owns Road over Alsea River?

It is owned by the U.S. Forest Service.