US Bridges

Monroe Ave over I-375

Good

Wayne County, Michigan · In Detroit · Structure no. 000000000011390

Built
1959
66 years old, rebuilt 1996
Condition
Good
inspected June 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
182 ft
4 main spans
Daily traffic
7,000
1996 count
Owner
State
State Highway Agency

About this bridge

Monroe Ave over I-375 is a prestressed concrete box beam or girders - single or spread carrying Monroe Ave over I-375 in Wayne County, Michigan. It was built in 1959 and reconstructed in 1996, so it is 66 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 7,000 vehicles a day, projected to reach 7,700 by 2015. The structure is 182 ft (55.4 m) long and 46 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMonroe Ave
CrossesI-375
LocationIn Detroit
RouteCity Street 2000
CountyWayne County
StateMichigan
Coordinates42.33671, -83.0384
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating34 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length182 ft (55.4 m)
Longest span63 ft (19.2 m)
Deck width46 ft (14.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,000 (1996)
Projected traffic7,700 by 2015
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Monroe Ave over I-375 built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1996.

What condition is Monroe Ave over I-375 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 June 2024.

How much traffic does Monroe Ave over I-375 carry?

About 7,000 vehicles per day (1996 count).

How long is Monroe Ave over I-375?

The structure is 182 ft (55.4 m) long with a longest span of 63 ft (19.2 m) and a deck 46 ft wide.

Who owns Monroe Ave over I-375?

It is owned by the State Highway Agency.