US Bridges

Csah 13 over Little Rock River

Good

Nobles County, Minnesota · 0.7 MI N of JCT Csah 6 · Structure no. 53J73

Built
2009
16 years old
Condition
Good
inspected October 2021
Type
Culvert
Concrete
Length
61 ft
4 main spans
Daily traffic
620
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 13 over Little Rock River is a concrete culvert carrying Csah 13 over Little Rock River in Nobles County, Minnesota. It was built in 2009, so it is 16 years old, younger 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 620 vehicles a day, projected to reach 520 by 2039. The structure is 61 ft (18.7 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCsah 13
CrossesLittle Rock River
Location0.7 MI N of JCT Csah 6
RouteCounty Highway 13
Coordinates43.55384, -95.79389
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
Channel and channel protection9 ExcellentNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionOctober 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable 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 spans4
Design loadHS 25 or greater
Structure length61 ft (18.7 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic620 (2019)
Projected traffic520 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 13 over Little Rock River built?

It was built in 2009, making it 16 years old in 2025.

What condition is Csah 13 over Little Rock 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 October 2021.

How much traffic does Csah 13 over Little Rock River carry?

About 620 vehicles per day (2019 count).

How long is Csah 13 over Little Rock River?

The structure is 61 ft (18.7 m) long with a longest span of 14 ft (4.3 m).

Who owns Csah 13 over Little Rock River?

It is owned by the County Highway Agency.