US Bridges

Csah 18 over Crow Wing River

FairPosted for load

Wadena County, Minnesota · 0.1 MI E of JCT CSAH25 · Structure no. 80509

Built
1969
56 years old
Condition
Fair
inspected August 2023
Type
Slab
Prestressed Concrete
Length
180 ft
4 main spans
Daily traffic
227
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 18 over Crow Wing River is a prestressed concrete slab carrying Csah 18 over Crow Wing River in Wadena County, Minnesota. It was built in 1969, so it is 56 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 227 vehicles a day, projected to reach 250 by 2042. The structure is 180 ft (55 m) long and 34 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesCsah 18
CrossesCrow Wing River
Location0.1 MI E of JCT CSAH25
RouteCounty Highway 18
CountyWadena County
StateMinnesota
Coordinates46.77813, -94.89297
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating30 US tons
Inventory rating20.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadH 20
Structure length180 ft (55 m)
Longest span45 ft (13.7 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic227 (2022)
Projected traffic250 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 Csah 18 over Crow Wing River built?

It was built in 1969, making it 56 years old in 2025.

What condition is Csah 18 over Crow Wing River 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 Csah 18 over Crow Wing River carry?

About 227 vehicles per day (2022 count).

How long is Csah 18 over Crow Wing River?

The structure is 180 ft (55 m) long with a longest span of 45 ft (13.7 m) and a deck 34 ft wide.

Who owns Csah 18 over Crow Wing River?

It is owned by the County Highway Agency.