US Bridges

Or 126 (hwy 62) over Knowles Creek

Fair

Lane County, Oregon · 017 MI E Mapleton · Structure no. 14380A062 01602

Built
1958
67 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Concrete Continuous
Length
242 ft
5 main spans
Daily traffic
4,523
2022 count
Owner
State
State Highway Agency

About this bridge

Or 126 (hwy 62) over Knowles Creek is a concrete continuous tee beam carrying Or 126 (hwy 62) over Knowles Creek in Lane County, Oregon. It was built in 1958, so it is 67 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 4,523 vehicles a day, roughly 15% of them trucks, projected to reach 4,700 by 2042. The structure is 242 ft (73.8 m) long and 31 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

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CarriesOr 126 (hwy 62)
CrossesKnowles Creek
Location017 MI E Mapleton
RouteState Highway 126
CountyLane County
StateOregon
Coordinates44.0269, -123.8298
Functional classRural Principal Arterial - Other

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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.5 US tons
Inventory rating22.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length242 ft (73.8 m)
Longest span78 ft (23.8 m)
Deck width31 ft (9.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,523 (2022)
Projected traffic4,700 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Or 126 (hwy 62) over Knowles Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is Or 126 (hwy 62) over Knowles 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 Or 126 (hwy 62) over Knowles Creek carry?

About 4,523 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is Or 126 (hwy 62) over Knowles Creek?

The structure is 242 ft (73.8 m) long with a longest span of 78 ft (23.8 m) and a deck 31 ft wide.

Who owns Or 126 (hwy 62) over Knowles Creek?

It is owned by the State Highway Agency.