US Bridges

Road over Mid Fk Willamette R

Good

Lane County, Oregon · .5 SE JCT 58-FS 23-.3 #21 · Structure no. 061805000001476

Built
1958
67 years old
Condition
Good
inspected September 2024
Type
Tee Beam
Concrete
Length
252 ft
5 main spans
Daily traffic
120
2010 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over Mid Fk Willamette R is a concrete tee beam carrying Road over Mid Fk Willamette R in Lane County, Oregon. It was built in 1958, so it is 67 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 120 vehicles a day, roughly 10% of them trucks, projected to reach 180 by 2045. The structure is 252 ft (76.8 m) long and 30 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

CarriesRoad
CrossesMid Fk Willamette R
Location.5 SE JCT 58-FS 23-.3 #21
RouteFederal Lands Road 21000
StateOregon
Coordinates43.72098, -122.43812
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 inspectionSeptember 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating96.1 US tons
Inventory rating61.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadOther
Structure length252 ft (76.8 m)
Longest span49 ft (14.8 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2010)
Projected traffic180 by 2045
Trucks10%
Lanes on structure2
Traffic directionTwo-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 Mid Fk Willamette R built?

It was built in 1958, making it 67 years old in 2025.

What condition is Road over Mid Fk Willamette R 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 September 2024.

How much traffic does Road over Mid Fk Willamette R carry?

About 120 vehicles per day (2010 count), of which roughly 10% are trucks.

How long is Road over Mid Fk Willamette R?

The structure is 252 ft (76.8 m) long with a longest span of 49 ft (14.8 m) and a deck 30 ft wide.

Who owns Road over Mid Fk Willamette R?

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