US Bridges

Bassonette Road over Deadwood Creek

Fair

Lane County, Oregon · 131 MI No of Swisshome · Structure no. 39C553515500008

Built
1988
37 years old
Condition
Fair
inspected August 2023
Type
Slab
Prestressed Concrete
Length
91 ft
2 main spans
Daily traffic
35
2020 count
Owner
County
County Highway Agency

About this bridge

Bassonette Road over Deadwood Creek is a prestressed concrete slab carrying Bassonette Road over Deadwood Creek in Lane County, Oregon. It was built in 1988, so it is 37 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 35 vehicles a day, projected to reach 40 by 2025. The structure is 91 ft (27.7 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesBassonette Road
CrossesDeadwood Creek
Location131 MI No of Swisshome
RouteCounty Highway C5155
CountyLane County
StateOregon
Coordinates44.18374, -123.70834
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating80 US tons
Inventory rating47 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20
Structure length91 ft (27.7 m)
Longest span45 ft (13.7 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2020)
Projected traffic40 by 2025
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Bassonette Road over Deadwood Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is Bassonette Road over Deadwood 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 August 2023.

How much traffic does Bassonette Road over Deadwood Creek carry?

About 35 vehicles per day (2020 count).

How long is Bassonette Road over Deadwood Creek?

The structure is 91 ft (27.7 m) long with a longest span of 45 ft (13.7 m) and a deck 16 ft wide.

Who owns Bassonette Road over Deadwood Creek?

It is owned by the County Highway Agency.