US Bridges

Dever-Conner Road over Crooks Creek

FairPosted for load

Linn County, Oregon · 0172 MI West I5 · Structure no. 12780 003400172

Built
1968
57 years old
Condition
Fair
inspected October 2024
Type
Slab
Prestressed Concrete
Length
76 ft
2 main spans
Daily traffic
309
2021 count
Owner
County
County Highway Agency

About this bridge

Dever-Conner Road over Crooks Creek is a prestressed concrete slab carrying Dever-Conner Road over Crooks Creek in Linn County, Oregon. It was built in 1968, so it is 57 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 6 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 309 vehicles a day, roughly 15% of them trucks, projected to reach 438 by 2041. The structure is 76 ft (23.2 m) long and 36 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesDever-Conner Road
CrossesCrooks Creek
Location0172 MI West I5
RouteCounty Highway A0500
CountyLinn County
StateOregon
Coordinates44.71923, -123.0868
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating19.3 US tons
Inventory rating15 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span37 ft (11.3 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic309 (2021)
Projected traffic438 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$506,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Dever-Conner Road over Crooks Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is Dever-Conner Road over Crooks 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 Dever-Conner Road over Crooks Creek carry?

About 309 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is Dever-Conner Road over Crooks Creek?

The structure is 76 ft (23.2 m) long with a longest span of 37 ft (11.3 m) and a deck 36 ft wide.

Who owns Dever-Conner Road over Crooks Creek?

It is owned by the County Highway Agency.