US Bridges

Dennison RD over Middle Branch Macon Drai

Good

Monroe County, Michigan · .3 MI No of M 50 · Structure no. 000000000007250

Built
2017
8 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
35 ft
1 main span
Daily traffic
484
2017 count
Owner
County
County Highway Agency

About this bridge

Dennison RD over Middle Branch Macon Drai is a concrete culvert carrying Dennison RD over Middle Branch Macon Drai in Monroe 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 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 484 vehicles a day, roughly 8% of them trucks, projected to reach 875 by 2037. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesDennison RD
CrossesMiddle Branch Macon Drai
Location.3 MI No of M 50
RouteCounty Highway 5809
CountyMonroe County
StateMichigan
Coordinates41.97426, -83.73149
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating71.4 US tons
Inventory rating55 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadGreater than HL 93
Structure length35 ft (10.7 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 traffic484 (2017)
Projected traffic875 by 2037
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 Dennison RD over Middle Branch Macon Drai built?

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

What condition is Dennison RD over Middle Branch Macon Drai 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 2023.

How much traffic does Dennison RD over Middle Branch Macon Drai carry?

About 484 vehicles per day (2017 count), of which roughly 8% are trucks.

How long is Dennison RD over Middle Branch Macon Drai?

The structure is 35 ft (10.7 m) long with a longest span of 32 ft (9.8 m).

Who owns Dennison RD over Middle Branch Macon Drai?

It is owned by the County Highway Agency.