US Bridges

Row River RD over Rat Creek

Fair

Lane County, Oregon · 080 MI E Cottage Grove · Structure no. 14965A240000780

Built
1974
51 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
121 ft
3 main spans
Daily traffic
3,939
2020 count
Owner
County
County Highway Agency

About this bridge

Row River RD over Rat Creek is a concrete continuous slab carrying Row River RD over Rat Creek in Lane County, Oregon. It was built in 1974, so it is 51 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 3,939 vehicles a day, roughly 10% of them trucks, projected to reach 5,896 by 2025. The structure is 121 ft (36.9 m) long and 32 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

CarriesRow River RD
CrossesRat Creek
Location080 MI E Cottage Grove
RouteCounty Highway C2400
StateOregon
Coordinates43.78395, -122.92347
Functional classRural Minor 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
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 rating33.2 US tons
Inventory rating25.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length121 ft (36.9 m)
Longest span48 ft (14.6 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,939 (2020)
Projected traffic5,896 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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 Row River RD over Rat Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is Row River RD over Rat 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 September 2024.

How much traffic does Row River RD over Rat Creek carry?

About 3,939 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Row River RD over Rat Creek?

The structure is 121 ft (36.9 m) long with a longest span of 48 ft (14.6 m) and a deck 32 ft wide.

Who owns Row River RD over Rat Creek?

It is owned by the County Highway Agency.