US Bridges

Wolf Creek Road over Swamp Creek

Fair

Lane County, Oregon · 084 MI SW City Crow · Structure no. 39C28A407800693

Built
1978
47 years old
Condition
Fair
inspected October 2024
Type
Slab
Prestressed Concrete
Length
28 ft
1 main span
Daily traffic
636
2020 count
Owner
County
County Highway Agency

About this bridge

Wolf Creek Road over Swamp Creek is a prestressed concrete slab carrying Wolf Creek Road over Swamp Creek in Lane County, Oregon. It was built in 1978, so it is 47 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 636 vehicles a day, roughly 10% of them trucks, projected to reach 746 by 2025. The structure is 28 ft (8.5 m) long and 28 ft wide. If it were closed, the detour would be 44.1 mi (71 km).

Location

Open in Google Maps
CarriesWolf Creek Road
CrossesSwamp Creek
Location084 MI SW City Crow
RouteCounty Highway A0451
CountyLane County
StateOregon
Coordinates43.92759, -123.41889
Functional classRural Major 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 inspectionOctober 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71 US tons
Inventory rating42 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 traffic636 (2020)
Projected traffic746 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.1 mi (71 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 Wolf Creek Road over Swamp Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is Wolf Creek Road over Swamp 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 October 2024.

How much traffic does Wolf Creek Road over Swamp Creek carry?

About 636 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Wolf Creek Road over Swamp 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 Wolf Creek Road over Swamp Creek?

It is owned by the County Highway Agency.