US Bridges

Austa RD over Wildcat Creek

FairPosted for load

Lane County, Oregon · At Siuslaw R Wildcat Conf · Structure no. 39C446438700008

Built
1925
100 years old, rebuilt 2016
Condition
Fair
inspected August 2024
Type
Truss - Thru
Wood or Timber
Length
161 ft
1 main span
Daily traffic
81
2020 count
Owner
County
County Highway Agency

About this bridge

Austa RD over Wildcat Creek is a wood or timber truss - thru carrying Austa RD over Wildcat Creek in Lane County, Oregon. It was built in 1925 and reconstructed in 2016, so it is 100 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 81 vehicles a day, projected to reach 96 by 2025. The structure is 161 ft (49.1 m) long and 15 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesAusta RD
CrossesWildcat Creek
LocationAt Siuslaw R Wildcat Conf
RouteCounty Highway C4387
CountyLane County
StateOregon
Coordinates44.00301, -123.65499
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating12.9 US tons
Inventory rating10 US tons

Structure

Structure typeTruss - Thru
MaterialWood or Timber
DeckWood or timber
Main spans1 (+5 approach)
Design loadH 10
Structure length161 ft (49.1 m)
Longest span75 ft (22.9 m)
Deck width15 ft (4.6 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deck13 ft (4 m)

Traffic and service

Average daily traffic81 (2020)
Projected traffic96 by 2025
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$908,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Austa RD over Wildcat Creek built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 2016.

What condition is Austa RD over Wildcat 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 2024.

How much traffic does Austa RD over Wildcat Creek carry?

About 81 vehicles per day (2020 count).

How long is Austa RD over Wildcat Creek?

The structure is 161 ft (49.1 m) long with a longest span of 75 ft (22.9 m) and a deck 15 ft wide.

Who owns Austa RD over Wildcat Creek?

It is owned by the County Highway Agency.