US Bridges

Csah 8 over Middle River

Fair

Marshall County, Minnesota · 0.3 MI S of JCT Csah 28 · Structure no. 95678

Built
1983
42 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
46 ft
3 main spans
Daily traffic
335
2018 count
Owner
County
County Highway Agency

About this bridge

Csah 8 over Middle River is a concrete culvert carrying Csah 8 over Middle River in Marshall County, Minnesota. It was built in 1983, so it is 42 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 335 vehicles a day, projected to reach 370 by 2038. The structure is 46 ft (14 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCsah 8
CrossesMiddle River
Location0.3 MI S of JCT Csah 28
RouteCounty Highway 8
CountyMarshall County
StateMinnesota
Coordinates48.35184, -96.32747
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.8 US tons
Inventory rating43.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length46 ft (14 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic335 (2018)
Projected traffic370 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 8 over Middle River built?

It was built in 1983, making it 42 years old in 2025.

What condition is Csah 8 over Middle 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 2024.

How much traffic does Csah 8 over Middle River carry?

About 335 vehicles per day (2018 count).

How long is Csah 8 over Middle River?

The structure is 46 ft (14 m) long with a longest span of 12 ft (3.7 m).

Who owns Csah 8 over Middle River?

It is owned by the County Highway Agency.