US Bridges

M-59 EB over Dequinder RD

Good

Macomb County, Michigan · @ Oakland County Line · Structure no. 000000000006057

Built
1972
53 years old, rebuilt 2009
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
159 ft
3 main spans
Daily traffic
44,118
2007 count
Owner
State
State Highway Agency

About this bridge

M-59 EB over Dequinder RD is a steel stringer/multi-beam or girder carrying M-59 EB over Dequinder RD in Macomb County, Michigan. It was built in 1972 and reconstructed in 2009, so it is 53 years old, older 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 44,118 vehicles a day, roughly 3% of them trucks, projected to reach 63,110 by 2035. The structure is 159 ft (48.6 m) long and 69 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesM-59 EB
CrossesDequinder RD
Location@ Oakland County Line
RouteState Highway 59
CountyMacomb County
StateMichigan
Coordinates42.62534, -83.09149
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating104.3 US tons
Inventory rating62.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length159 ft (48.6 m)
Longest span89 ft (27.2 m)
Deck width69 ft (20.9 m)
Roadway width65 ft (19.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44,118 (2007)
Projected traffic63,110 by 2035
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck replacement with only incidental widening
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was M-59 EB over Dequinder RD built?

It was built in 1972, making it 53 years old in 2025. It was reconstructed in 2009.

What condition is M-59 EB over Dequinder RD 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 May 2023.

How much traffic does M-59 EB over Dequinder RD carry?

About 44,118 vehicles per day (2007 count), of which roughly 3% are trucks.

How long is M-59 EB over Dequinder RD?

The structure is 159 ft (48.6 m) long with a longest span of 89 ft (27.2 m) and a deck 69 ft wide.

Who owns M-59 EB over Dequinder RD?

It is owned by the State Highway Agency.