US Bridges

Csah 72 over Otter Tail River

Good

Otter Tail County, Minnesota · 1.5 MI NW of JCT TH 78 · Structure no. 56538

Built
2012
13 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete Continuous
Length
128 ft
3 main spans
Daily traffic
1,350
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 72 over Otter Tail River is a concrete continuous slab carrying Csah 72 over Otter Tail River in Otter Tail County, Minnesota. It was built in 2012, so it is 13 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,350 vehicles a day, projected to reach 1,250 by 2039. The structure is 128 ft (38.9 m) long and 48 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesCsah 72
CrossesOtter Tail River
Location1.5 MI NW of JCT TH 78
RouteCounty Highway 72
Coordinates46.35922, -95.73348
Functional classRural Major Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating42.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length128 ft (38.9 m)
Longest span48 ft (14.6 m)
Deck width48 ft (14.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,350 (2019)
Projected traffic1,250 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed13 mi (21 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 72 over Otter Tail River built?

It was built in 2012, making it 13 years old in 2025.

What condition is Csah 72 over Otter Tail River 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 October 2023.

How much traffic does Csah 72 over Otter Tail River carry?

About 1,350 vehicles per day (2019 count).

How long is Csah 72 over Otter Tail River?

The structure is 128 ft (38.9 m) long with a longest span of 48 ft (14.6 m) and a deck 48 ft wide.

Who owns Csah 72 over Otter Tail River?

It is owned by the County Highway Agency.