US Bridges

Cochran CR DR over Cochran Creek

Fair

Linn County, Oregon · 005 MI E CR 425 · Structure no. 12620 074000048

Built
1963
62 years old
Condition
Fair
inspected May 2023
Type
Channel Beam
Concrete
Length
23 ft
1 main span
Daily traffic
103
2021 count
Owner
County
County Highway Agency

About this bridge

Cochran CR DR over Cochran Creek is a concrete channel beam carrying Cochran CR DR over Cochran Creek in Linn County, Oregon. It was built in 1963, so it is 62 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.

It carries about 103 vehicles a day, roughly 5% of them trucks, projected to reach 144 by 2041. The structure is 23 ft (7 m) long and 33 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesCochran CR DR
CrossesCochran Creek
Location005 MI E CR 425
RouteCounty Highway C0740
StateOregon
Coordinates44.42625, -122.98003
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.9 US tons
Inventory rating30 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length23 ft (7 m)
Longest span22 ft (6.7 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic103 (2021)
Projected traffic144 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-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 Cochran CR DR over Cochran Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is Cochran CR DR over Cochran 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 May 2023.

How much traffic does Cochran CR DR over Cochran Creek carry?

About 103 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Cochran CR DR over Cochran Creek?

The structure is 23 ft (7 m) long with a longest span of 22 ft (6.7 m) and a deck 33 ft wide.

Who owns Cochran CR DR over Cochran Creek?

It is owned by the County Highway Agency.