US Bridges

Csah 8 over Des Moines River

Good

Murray County, Minnesota · 2.3 MI W of JCT Csah 42 · Structure no. 51521

Built
1986
39 years old
Condition
Good
inspected September 2024
Type
Slab
Wood or Timber
Length
104 ft
4 main spans
Daily traffic
120
2017 count
Owner
County
County Highway Agency

About this bridge

Csah 8 over Des Moines River is a wood or timber slab carrying Csah 8 over Des Moines River in Murray County, Minnesota. It was built in 1986, so it is 39 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 120 vehicles a day, projected to reach 120 by 2039. The structure is 104 ft (31.7 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCsah 8
CrossesDes Moines River
Location2.3 MI W of JCT Csah 42
RouteCounty Highway 8
Coordinates44.00772, -95.58952
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.9 US tons
Inventory rating40.3 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadHS 20
Structure length104 ft (31.7 m)
Longest span26 ft (7.9 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2017)
Projected traffic120 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Des Moines River built?

It was built in 1986, making it 39 years old in 2025.

What condition is Csah 8 over Des Moines 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 September 2024.

How much traffic does Csah 8 over Des Moines River carry?

About 120 vehicles per day (2017 count).

How long is Csah 8 over Des Moines River?

The structure is 104 ft (31.7 m) long with a longest span of 26 ft (7.9 m) and a deck 30 ft wide.

Who owns Csah 8 over Des Moines River?

It is owned by the County Highway Agency.