US Bridges

Big Fall CR RD over Big Fall Creek Reservoir

FairPosted for load

Lane County, Oregon · 050 MI E Fall Creek Dam · Structure no. 39C636624000758

Built
1965
60 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
170 ft
3 main spans
Daily traffic
570
2020 count
Owner
County
County Highway Agency

About this bridge

Big Fall CR RD over Big Fall Creek Reservoir is a prestressed concrete stringer/multi-beam or girder carrying Big Fall CR RD over Big Fall Creek Reservoir in Lane 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. Its operating status is: posted for load restriction.

It carries about 570 vehicles a day, roughly 10% of them trucks, projected to reach 670 by 2025. The structure is 170 ft (51.8 m) long and 32 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

CarriesBig Fall CR RD
CrossesBig Fall Creek Reservoir
Location050 MI E Fall Creek Dam
RouteCounty Highway C6240
StateOregon
Coordinates43.97277, -122.66068
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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating29.4 US tons
Inventory rating22.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length170 ft (51.8 m)
Longest span56 ft (17.1 m)
Deck width32 ft (9.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic570 (2020)
Projected traffic670 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Big Fall CR RD over Big Fall Creek Reservoir built?

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

What condition is Big Fall CR RD over Big Fall Creek Reservoir 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 October 2024.

How much traffic does Big Fall CR RD over Big Fall Creek Reservoir carry?

About 570 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Big Fall CR RD over Big Fall Creek Reservoir?

The structure is 170 ft (51.8 m) long with a longest span of 56 ft (17.1 m) and a deck 32 ft wide.

Who owns Big Fall CR RD over Big Fall Creek Reservoir?

It is owned by the County Highway Agency.