US Bridges

CR 54 over Little Cobb River

Poor

Waseca County, Minnesota · 0.9 MI S of JCT CSAH21 · Structure no. 7604

Built
1931
94 years old
Condition
Poor
inspected November 2024
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
86
2021 count
Owner
County
County Highway Agency

About this bridge

CR 54 over Little Cobb River is a concrete culvert carrying CR 54 over Little Cobb River in Waseca County, Minnesota. It was built in 1931, so it is 94 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 86 vehicles a day, projected to reach 40 by 2041. The structure is 33 ft (10.2 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCR 54
CrossesLittle Cobb River
Location0.9 MI S of JCT CSAH21
RouteCounty Highway 54
Coordinates43.95107, -93.74784
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating43.2 US tons
Inventory rating28.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length33 ft (10.2 m)
Longest span10 ft (3.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic86 (2021)
Projected traffic40 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$123 million
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 54 over Little Cobb River built?

It was built in 1931, making it 94 years old in 2025.

What condition is CR 54 over Little Cobb River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.

How much traffic does CR 54 over Little Cobb River carry?

About 86 vehicles per day (2021 count).

How long is CR 54 over Little Cobb River?

The structure is 33 ft (10.2 m) long with a longest span of 10 ft (3.2 m).

Who owns CR 54 over Little Cobb River?

It is owned by the County Highway Agency.