US Bridges

Road over Lemolo #1 Spillway

Fair

Douglas County, Oregon · No Data Entered · Structure no. 061503000001370

Built
1954
71 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
121 ft
4 main spans
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Road over Lemolo #1 Spillway is a steel stringer/multi-beam or girder carrying Road over Lemolo #1 Spillway in Douglas County, Oregon. It was built in 1954, so it is 71 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 6 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 121 ft (36.9 m) long and 16 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

CarriesRoad
CrossesLemolo #1 Spillway
LocationNo Data Entered
RouteFederal Lands Road 26100
StateOregon
Coordinates43.32297, -122.19402
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
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 rating100.1 US tons
Inventory rating60.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length121 ft (36.9 m)
Longest span35 ft (10.7 m)
Deck width16 ft (5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed620.7 mi (999 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byPrivate (other than railroad)
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 Lemolo #1 Spillway built?

It was built in 1954, making it 71 years old in 2025.

What condition is Road over Lemolo #1 Spillway 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 June 2023.

How much traffic does Road over Lemolo #1 Spillway carry?

About 50 vehicles per day (latest count).

How long is Road over Lemolo #1 Spillway?

The structure is 121 ft (36.9 m) long with a longest span of 35 ft (10.7 m) and a deck 16 ft wide.

Who owns Road over Lemolo #1 Spillway?

It is owned by the U.S. Forest Service and maintained by the Private (other than railroad).