US Bridges

Csah 64 over Sauk River

Fair

Stearns County, Minnesota · 0.1 MI N of JCT Csah 65 · Structure no. 73510

Built
1967
58 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
135 ft
3 main spans
Daily traffic
1,200
2017 count
Owner
County
County Highway Agency

About this bridge

Csah 64 over Sauk River is a steel continuous stringer/multi-beam or girder carrying Csah 64 over Sauk River in Stearns County, Minnesota. It was built in 1967, so it is 58 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 6 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 1,200 vehicles a day, projected to reach 1,200 by 2039. The structure is 135 ft (41.1 m) long and 39 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCsah 64
CrossesSauk River
Location0.1 MI N of JCT Csah 65
RouteCounty Highway 64
CountyStearns County
StateMinnesota
Coordinates45.6796, -94.81933
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating47.2 US tons
Inventory rating28.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length135 ft (41.1 m)
Longest span51 ft (15.5 m)
Deck width39 ft (11.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2017)
Projected traffic1,200 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.8 mi (11 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 64 over Sauk River built?

It was built in 1967, making it 58 years old in 2025.

What condition is Csah 64 over Sauk 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 January 2025.

How much traffic does Csah 64 over Sauk River carry?

About 1,200 vehicles per day (2017 count).

How long is Csah 64 over Sauk River?

The structure is 135 ft (41.1 m) long with a longest span of 51 ft (15.5 m) and a deck 39 ft wide.

Who owns Csah 64 over Sauk River?

It is owned by the County Highway Agency.