US Bridges

Csah 36 over Snake River

Fair

Marshall County, Minnesota · 0.9 MI S of JCT Csah 35 · Structure no. 45515

Built
1969
56 years old
Condition
Fair
inspected October 2023
Type
Channel Beam
Prestressed Concrete
Length
75 ft
3 main spans
Daily traffic
265
2018 count
Owner
County
County Highway Agency

About this bridge

Csah 36 over Snake River is a prestressed concrete channel beam carrying Csah 36 over Snake River in Marshall County, Minnesota. It was built in 1969, so it is 56 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 265 vehicles a day, projected to reach 235 by 2038. The structure is 75 ft (22.9 m) long and 32 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesCsah 36
CrossesSnake River
Location0.9 MI S of JCT Csah 35
RouteCounty Highway 36
CountyMarshall County
StateMinnesota
Coordinates48.2122, -96.60937
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating36.7 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadH 20
Structure length75 ft (22.9 m)
Longest span25 ft (7.6 m)
Deck width32 ft (9.7 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic265 (2018)
Projected traffic235 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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$198 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 36 over Snake River built?

It was built in 1969, making it 56 years old in 2025.

What condition is Csah 36 over Snake 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 October 2023.

How much traffic does Csah 36 over Snake River carry?

About 265 vehicles per day (2018 count).

How long is Csah 36 over Snake River?

The structure is 75 ft (22.9 m) long with a longest span of 25 ft (7.6 m) and a deck 32 ft wide.

Who owns Csah 36 over Snake River?

It is owned by the County Highway Agency.