US Bridges

Kingwood Ave over Rock Creek

Fair

Linn County, Oregon · 027 MI E CR 6 · Structure no. 14055 081300274

Built
1965
60 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
230 ft
3 main spans
Daily traffic
927
2021 count
Owner
County
County Highway Agency

About this bridge

Kingwood Ave over Rock Creek is a prestressed concrete stringer/multi-beam or girder carrying Kingwood Ave over Rock Creek in Linn County, Oregon. It was built in 1965, so it is 60 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 927 vehicles a day, roughly 10% of them trucks, projected to reach 1,133 by 2041. The structure is 230 ft (70.1 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesKingwood Ave
CrossesRock Creek
Location027 MI E CR 6
RouteCounty Highway A0487
CountyLinn County
StateOregon
Coordinates44.74898, -122.44591
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.4 US tons
Inventory rating19.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length230 ft (70.1 m)
Longest span76 ft (23.2 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic927 (2021)
Projected traffic1,133 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Kingwood Ave over Rock Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Kingwood Ave over Rock 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 July 2023.

How much traffic does Kingwood Ave over Rock Creek carry?

About 927 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is Kingwood Ave over Rock Creek?

The structure is 230 ft (70.1 m) long with a longest span of 76 ft (23.2 m) and a deck 30 ft wide.

Who owns Kingwood Ave over Rock Creek?

It is owned by the County Highway Agency.