US Bridges

51st Street over M Br Black River

Good

Allegan County, Michigan · Approx 3/8MI NE of Baseli · Structure no. 000000000000269

Built
2017
8 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
42 ft
1 main span
Daily traffic
100
2017 count
Owner
County
County Highway Agency

About this bridge

51st Street over M Br Black River is a concrete culvert carrying 51st Street over M Br Black River in Allegan County, Michigan. It was built in 2017, so it is 8 years old, younger than the Michigan average of 48.3 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 100 vehicles a day, roughly 7% of them trucks, projected to reach 150 by 2037. The structure is 42 ft (12.8 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Carries51st Street
CrossesM Br Black River
LocationApprox 3/8MI NE of Baseli
RouteCounty Highway 0
Coordinates42.42339, -86.04248
Functional classRural Local

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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating67.9 US tons
Inventory rating57.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadGreater than HL 93
Structure length42 ft (12.8 m)
Longest span40 ft (12.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2017)
Projected traffic150 by 2037
Trucks7%
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 51st Street over M Br Black River built?

It was built in 2017, making it 8 years old in 2025.

What condition is 51st Street over M Br Black 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 April 2023.

How much traffic does 51st Street over M Br Black River carry?

About 100 vehicles per day (2017 count), of which roughly 7% are trucks.

How long is 51st Street over M Br Black River?

The structure is 42 ft (12.8 m) long with a longest span of 40 ft (12.1 m).

Who owns 51st Street over M Br Black River?

It is owned by the County Highway Agency.