US Bridges

Little Lake Road over Thalweg Creek

Fair

Lane County, Oregon · 006 MI So Triangle Lake · Structure no. 22051 000 00011

Built
2012
13 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete
Length
26 ft
1 main span
Daily traffic
60
2020 count
Owner
County
County Highway Agency

About this bridge

Little Lake Road over Thalweg Creek is a concrete culvert carrying Little Lake Road over Thalweg Creek in Lane County, Oregon. It was built in 2012, so it is 13 years old, younger 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 60 vehicles a day, projected to reach 69 by 2025. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesLittle Lake Road
CrossesThalweg Creek
Location006 MI So Triangle Lake
RouteCounty Highway 0
StateOregon
Coordinates44.1671, -123.57853
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating98.9 US tons
Inventory rating76.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length26 ft (7.9 m)
Longest span26 ft (7.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2020)
Projected traffic69 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Little Lake Road over Thalweg Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is Little Lake Road over Thalweg Creek 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 September 2023.

How much traffic does Little Lake Road over Thalweg Creek carry?

About 60 vehicles per day (2020 count).

How long is Little Lake Road over Thalweg Creek?

The structure is 26 ft (7.9 m) long with a longest span of 26 ft (7.9 m).

Who owns Little Lake Road over Thalweg Creek?

It is owned by the County Highway Agency.