US Bridges

Csah 1 over S Fk Pine River

PoorPosted for load

Cass County, Minnesota · 0.9 MI S of JCT TH 371 · Structure no. 11501

Built
1961
64 years old
Condition
Poor
inspected September 2024
Type
Slab
Wood or Timber
Length
78 ft
3 main spans
Daily traffic
920
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 1 over S Fk Pine River is a wood or timber slab carrying Csah 1 over S Fk Pine River in Cass County, Minnesota. It was built in 1961, so it is 64 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 920 vehicles a day, projected to reach 870 by 2039. The structure is 78 ft (23.8 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCsah 1
CrossesS Fk Pine River
Location0.9 MI S of JCT TH 371
RouteCounty Highway 1
Coordinates46.70386, -94.40901
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating33.8 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 20
Structure length78 ft (23.8 m)
Longest span26 ft (7.8 m)
Deck width30 ft (9 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic920 (2019)
Projected traffic870 by 2039
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 1 over S Fk Pine River built?

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

What condition is Csah 1 over S Fk Pine River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does Csah 1 over S Fk Pine River carry?

About 920 vehicles per day (2019 count).

How long is Csah 1 over S Fk Pine River?

The structure is 78 ft (23.8 m) long with a longest span of 26 ft (7.8 m) and a deck 30 ft wide.

Who owns Csah 1 over S Fk Pine River?

It is owned by the County Highway Agency.