US Bridges

Road over Tailrace

Good

Douglas County, Oregon · No Data Entered · Structure no. 061503000001457

Built
1982
43 years old
Condition
Good
inspected November 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
162 ft
3 main spans
Daily traffic
50
2006 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over Tailrace is a prestressed concrete stringer/multi-beam or girder carrying Road over Tailrace in Douglas County, Oregon. It was built in 1982, so it is 43 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, projected to reach 75 by 2045. The structure is 162 ft (49.4 m) long and 30 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

CarriesRoad
CrossesTailrace
LocationNo Data Entered
RouteFederal Lands Road 0
StateOregon
Coordinates43.27981, -122.40302
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 inspectionNovember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating87.1 US tons
Inventory rating52 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length162 ft (49.4 m)
Longest span92 ft (28 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2006)
Projected traffic75 by 2045
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed12.4 mi (20 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 Tailrace built?

It was built in 1982, making it 43 years old in 2025.

What condition is Road over Tailrace 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 November 2022.

How much traffic does Road over Tailrace carry?

About 50 vehicles per day (2006 count).

How long is Road over Tailrace?

The structure is 162 ft (49.4 m) long with a longest span of 92 ft (28 m) and a deck 30 ft wide.

Who owns Road over Tailrace?

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