US Bridges

Scio-Main St. over Thomas CR

Fair

Linn County, Oregon · In Scio · Structure no. 20565 611 00003

Built
2007
18 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
111 ft
1 main span
Daily traffic
5,000
2021 count
Owner
County
County Highway Agency

About this bridge

Scio-Main St. over Thomas CR is a prestressed concrete box beam or girders - multiple carrying Scio-Main St. over Thomas CR in Linn County, Oregon. It was built in 2007, so it is 18 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 5,000 vehicles a day, roughly 8% of them trucks, projected to reach 5,800 by 2041. The structure is 111 ft (33.8 m) long and 50 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesScio-Main St.
CrossesThomas CR
LocationIn Scio
RouteCounty Highway C0611
CountyLinn County
StateOregon
Coordinates44.70425, -122.84888
Functional classRural Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84.3 US tons
Inventory rating65 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length111 ft (33.8 m)
Longest span111 ft (33.8 m)
Deck width50 ft (15.2 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2021)
Projected traffic5,800 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.2 mi (10 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 Scio-Main St. over Thomas CR built?

It was built in 2007, making it 18 years old in 2025.

What condition is Scio-Main St. over Thomas CR 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 July 2023.

How much traffic does Scio-Main St. over Thomas CR carry?

About 5,000 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Scio-Main St. over Thomas CR?

The structure is 111 ft (33.8 m) long with a longest span of 111 ft (33.8 m) and a deck 50 ft wide.

Who owns Scio-Main St. over Thomas CR?

It is owned by the County Highway Agency.