US Bridges

Diamond Hill Dr. over Camous Creek

Fair

Linn County, Oregon · 1.0 MI NE Harrisburg · Structure no. 12421 001400066

Built
1960
65 years old
Condition
Fair
inspected May 2023
Type
Slab
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
2,163
2021 count
Owner
County
County Highway Agency

About this bridge

Diamond Hill Dr. over Camous Creek is a prestressed concrete slab carrying Diamond Hill Dr. over Camous Creek in Linn County, Oregon. It was built in 1960, so it is 65 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 2,163 vehicles a day, roughly 15% of them trucks, projected to reach 2,884 by 2041. The structure is 29 ft (8.8 m) long and 31 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesDiamond Hill Dr.
CrossesCamous Creek
Location1.0 MI NE Harrisburg
RouteCounty Highway C0014
CountyLinn County
StateOregon
Coordinates44.28313, -123.14734
Functional classRural Minor Arterial

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.
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.2 US tons
Inventory rating36.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span28 ft (8.5 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,163 (2021)
Projected traffic2,884 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-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 statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$149,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Diamond Hill Dr. over Camous Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Diamond Hill Dr. over Camous 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 Diamond Hill Dr. over Camous Creek carry?

About 2,163 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is Diamond Hill Dr. over Camous Creek?

The structure is 29 ft (8.8 m) long with a longest span of 28 ft (8.5 m) and a deck 31 ft wide.

Who owns Diamond Hill Dr. over Camous Creek?

It is owned by the County Highway Agency.