US Bridges

Csah 60 over Otter Tail River

Fair

Otter Tail County, Minnesota · 0.8 MI NE of JCT TH 10 · Structure no. 56513

Built
1968
57 years old
Condition
Fair
inspected November 2023
Type
Channel Beam
Prestressed Concrete
Length
93 ft
3 main spans
Daily traffic
570
2015 count
Owner
County
County Highway Agency

About this bridge

Csah 60 over Otter Tail River is a prestressed concrete channel beam carrying Csah 60 over Otter Tail River in Otter Tail County, Minnesota. It was built in 1968, so it is 57 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.

It carries about 570 vehicles a day, projected to reach 570 by 2039. The structure is 93 ft (28.4 m) long and 37 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesCsah 60
CrossesOtter Tail River
Location0.8 MI NE of JCT TH 10
RouteCounty Highway 60
Coordinates46.66335, -95.63902
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.1 US tons
Inventory rating31.1 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadH 20
Structure length93 ft (28.4 m)
Longest span31 ft (9.5 m)
Deck width37 ft (11.4 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic570 (2015)
Projected traffic570 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$202 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 60 over Otter Tail River built?

It was built in 1968, making it 57 years old in 2025.

What condition is Csah 60 over Otter Tail 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 November 2023.

How much traffic does Csah 60 over Otter Tail River carry?

About 570 vehicles per day (2015 count).

How long is Csah 60 over Otter Tail River?

The structure is 93 ft (28.4 m) long with a longest span of 31 ft (9.5 m) and a deck 37 ft wide.

Who owns Csah 60 over Otter Tail River?

It is owned by the County Highway Agency.