US Bridges

Csah 1 over Pisgah Reservoir

Good

Otter Tail County, Minnesota · 0.5 MI NE JCT Isth 94 · Structure no. 56539

Built
2011
14 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
461 ft
3 main spans
Daily traffic
4,700
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 1 over Pisgah Reservoir is a prestressed concrete stringer/multi-beam or girder carrying Csah 1 over Pisgah Reservoir in Otter Tail County, Minnesota. It was built in 2011, so it is 14 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,700 vehicles a day, projected to reach 4,500 by 2039. The structure is 461 ft (140.5 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCsah 1
CrossesPisgah Reservoir
Location0.5 MI NE JCT Isth 94
RouteCounty Highway 1
CountyOtter Tail County
StateMinnesota
Coordinates46.27984, -96.10243
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating109.8 US tons
Inventory rating57.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length461 ft (140.5 m)
Longest span152 ft (46.3 m)
Deck width55 ft (16.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,700 (2019)
Projected traffic4,500 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 Pisgah Reservoir built?

It was built in 2011, making it 14 years old in 2025.

What condition is Csah 1 over Pisgah Reservoir in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does Csah 1 over Pisgah Reservoir carry?

About 4,700 vehicles per day (2019 count).

How long is Csah 1 over Pisgah Reservoir?

The structure is 461 ft (140.5 m) long with a longest span of 152 ft (46.3 m) and a deck 55 ft wide.

Who owns Csah 1 over Pisgah Reservoir?

It is owned by the County Highway Agency.