US Bridges

Csah 15 over Mud Creek

Good

Rock County, Minnesota · 1.5 MI E of JCT Csah 6 · Structure no. 93209

Built
1976
49 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete
Length
38 ft
3 main spans
Daily traffic
79
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 15 over Mud Creek is a concrete culvert carrying Csah 15 over Mud Creek in Rock County, Minnesota. It was built in 1976, so it is 49 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 79 vehicles a day, projected to reach 75 by 2042. The structure is 38 ft (11.6 m) long. If it were closed, the detour would be 9.9 mi (16 km).

CarriesCsah 15
CrossesMud Creek
Location1.5 MI E of JCT Csah 6
RouteCounty Highway 15
Coordinates43.58738, -96.32246
Functional classRural Minor 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 protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating39.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span10 ft (2.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic79 (2022)
Projected traffic75 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 15 over Mud Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is Csah 15 over Mud Creek 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 2024.

How much traffic does Csah 15 over Mud Creek carry?

About 79 vehicles per day (2022 count).

How long is Csah 15 over Mud Creek?

The structure is 38 ft (11.6 m) long with a longest span of 10 ft (2.9 m).

Who owns Csah 15 over Mud Creek?

It is owned by the County Highway Agency.