US Bridges

Plagmann Dr. over Spring Creek

Fair

Linn County, Oregon · 008 MI E CR 318 · Structure no. 12795 065200084

Built
1961
64 years old
Condition
Fair
inspected June 2023
Type
Slab
Prestressed Concrete
Length
75 ft
3 main spans
Daily traffic
36
2021 count
Owner
County
County Highway Agency

About this bridge

Plagmann Dr. over Spring Creek is a prestressed concrete slab carrying Plagmann Dr. over Spring Creek in Linn County, Oregon. It was built in 1961, so it is 64 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 36 vehicles a day, projected to reach 52 by 2041. The structure is 75 ft (22.9 m) long and 25 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesPlagmann Dr.
CrossesSpring Creek
Location008 MI E CR 318
RouteCounty Highway C0652
CountyLinn County
StateOregon
Coordinates44.6582, -122.95705
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 rating38.3 US tons
Inventory rating29.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHS 20
Structure length75 ft (22.9 m)
Longest span25 ft (7.6 m)
Deck width25 ft (7.5 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36 (2021)
Projected traffic52 by 2041
Trucks0%
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 Plagmann Dr. over Spring Creek built?

It was built in 1961, making it 64 years old in 2025.

What condition is Plagmann Dr. over Spring 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 June 2023.

How much traffic does Plagmann Dr. over Spring Creek carry?

About 36 vehicles per day (2021 count).

How long is Plagmann Dr. over Spring Creek?

The structure is 75 ft (22.9 m) long with a longest span of 25 ft (7.6 m) and a deck 25 ft wide.

Who owns Plagmann Dr. over Spring Creek?

It is owned by the County Highway Agency.