US Bridges

Csah 51 over Platte River

Good

Morrison County, Minnesota · 1.1 MI NW of JCT CR 272 · Structure no. 49J44

Built
2007
18 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
34 ft
1 main span
Daily traffic
225
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 51 over Platte River is a concrete culvert carrying Csah 51 over Platte River in Morrison County, Minnesota. It was built in 2007, so it is 18 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 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 225 vehicles a day, projected to reach 225 by 2042. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesCsah 51
CrossesPlatte River
Location1.1 MI NW of JCT CR 272
RouteCounty Highway 51
Coordinates46.1501, -93.93529
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 protection9 ExcellentNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating54 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length34 ft (10.4 m)
Longest span32 ft (9.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic225 (2022)
Projected traffic225 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 51 over Platte River built?

It was built in 2007, making it 18 years old in 2025.

What condition is Csah 51 over Platte 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 November 2024.

How much traffic does Csah 51 over Platte River carry?

About 225 vehicles per day (2022 count).

How long is Csah 51 over Platte River?

The structure is 34 ft (10.4 m) long with a longest span of 32 ft (9.8 m).

Who owns Csah 51 over Platte River?

It is owned by the County Highway Agency.