US Bridges

Cedar Flats RD over Cedar Flat Creek

Fair

Lane County, Oregon · 0061 MI S HWY 126 · Structure no. 39C107105000061

Built
1975
50 years old
Condition
Fair
inspected August 2024
Type
Slab
Prestressed Concrete
Length
27 ft
1 main span
Daily traffic
578
2020 count
Owner
County
County Highway Agency

About this bridge

Cedar Flats RD over Cedar Flat Creek is a prestressed concrete slab carrying Cedar Flats RD over Cedar Flat Creek in Lane 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 fair condition with a lowest component rating of 5 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 578 vehicles a day, roughly 10% of them trucks, projected to reach 678 by 2025. The structure is 27 ft (8.2 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesCedar Flats RD
CrossesCedar Flat Creek
Location0061 MI S HWY 126
RouteCounty Highway C1050
StateOregon
Coordinates44.04606, -122.83761
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating41 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span26 ft (7.9 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic578 (2020)
Projected traffic678 by 2025
Trucks10%
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 Cedar Flats RD over Cedar Flat Creek built?

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

What condition is Cedar Flats RD over Cedar Flat 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 August 2024.

How much traffic does Cedar Flats RD over Cedar Flat Creek carry?

About 578 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Cedar Flats RD over Cedar Flat Creek?

The structure is 27 ft (8.2 m) long with a longest span of 26 ft (7.9 m) and a deck 28 ft wide.

Who owns Cedar Flats RD over Cedar Flat Creek?

It is owned by the County Highway Agency.