US Bridges

Thompson Road over Thompson Creek

Fair

Lane County, Oregon · 0082 MI N HWY 36 · Structure no. 39C541511000082

Built
1977
48 years old
Condition
Fair
inspected September 2023
Type
Slab
Prestressed Concrete
Length
28 ft
1 main span
Daily traffic
76
2020 count
Owner
County
County Highway Agency

About this bridge

Thompson Road over Thompson Creek is a prestressed concrete slab carrying Thompson Road over Thompson Creek in Lane County, Oregon. It was built in 1977, so it is 48 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 5 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 76 vehicles a day, projected to reach 86 by 2025. The structure is 28 ft (8.5 m) long and 28 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesThompson Road
CrossesThompson Creek
Location0082 MI N HWY 36
RouteCounty Highway C5110
CountyLane County
StateOregon
Coordinates44.08304, -123.87006
Functional classRural Minor Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span27 ft (8.2 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic76 (2020)
Projected traffic86 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 Thompson Road over Thompson Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Thompson Road over Thompson 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 Thompson Road over Thompson Creek carry?

About 76 vehicles per day (2020 count).

How long is Thompson Road over Thompson Creek?

The structure is 28 ft (8.5 m) long with a longest span of 27 ft (8.2 m) and a deck 28 ft wide.

Who owns Thompson Road over Thompson Creek?

It is owned by the County Highway Agency.