US Bridges

Kenworthy RD over Murder Creek

GoodPosted for load

Linn County, Oregon · 0002 MI West I5 · Structure no. 12734 031700245

Built
1975
50 years old
Condition
Good
inspected October 2024
Type
Slab
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
309
2021 count
Owner
County
County Highway Agency

About this bridge

Kenworthy RD over Murder Creek is a prestressed concrete slab carrying Kenworthy RD over Murder Creek in Linn County, Oregon. It was built in 1975, so it is 50 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 309 vehicles a day, roughly 10% of them trucks, projected to reach 464 by 2041. The structure is 40 ft (12.2 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesKenworthy RD
CrossesMurder Creek
Location0002 MI West I5
RouteCounty Highway C0317
StateOregon
Coordinates44.66516, -123.05697
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating21.4 US tons
Inventory rating16.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span39 ft (11.9 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic309 (2021)
Projected traffic464 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Kenworthy RD over Murder Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is Kenworthy RD over Murder Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does Kenworthy RD over Murder Creek carry?

About 309 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is Kenworthy RD over Murder Creek?

The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 28 ft wide.

Who owns Kenworthy RD over Murder Creek?

It is owned by the County Highway Agency.