US Bridges

Calapooia Drive over Bigs Creek

Fair

Linn County, Oregon · MP 11.1 · Structure no. 23839 000 00250

Built
1983
42 years old
Condition
Fair
inspected August 2023
Type
Slab
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
200
2021 count
Owner
County
County Highway Agency

About this bridge

Calapooia Drive over Bigs Creek is a prestressed concrete slab carrying Calapooia Drive over Bigs Creek in Linn County, Oregon. It was built in 1983, so it is 42 years old, younger 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 200 vehicles a day, roughly 80% of them trucks, projected to reach 240 by 2041. The structure is 41 ft (12.5 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesCalapooia Drive
CrossesBigs Creek
LocationMP 11.1
RouteCounty Highway C0000
CountyLinn County
StateOregon
Coordinates44.28464, -122.61328
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.1 US tons
Inventory rating28.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length41 ft (12.5 m)
Longest span41 ft (12.5 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2021)
Projected traffic240 by 2041
Trucks80%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 Calapooia Drive over Bigs Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is Calapooia Drive over Bigs 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 2023.

How much traffic does Calapooia Drive over Bigs Creek carry?

About 200 vehicles per day (2021 count), of which roughly 80% are trucks.

How long is Calapooia Drive over Bigs Creek?

The structure is 41 ft (12.5 m) long with a longest span of 41 ft (12.5 m) and a deck 16 ft wide.

Who owns Calapooia Drive over Bigs Creek?

It is owned by the County Highway Agency.