US Bridges

Savannah Avenue over I-75

FairClosed to traffic

Wayne County, Michigan · In Detroit · Structure no. 000000000011860

Built
1967
58 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
198 ft
2 main spans
Daily traffic
6,345
2020 count
Owner
State
State Highway Agency

About this bridge

Savannah Avenue over I-75 is a steel stringer/multi-beam or girder carrying Savannah Avenue over I-75 in Wayne County, Michigan. It was built in 1967, so it is 58 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: closed to all traffic.

It carries about 6,345 vehicles a day, roughly 3% of them trucks, projected to reach 6,740 by 2040. The structure is 198 ft (60.3 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSavannah Avenue
CrossesI-75
LocationIn Detroit
RouteCity Street 2000
CountyWayne County
StateMichigan
Coordinates42.42597, -83.09382
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating72.9 US tons
Inventory rating43.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length198 ft (60.3 m)
Longest span104 ft (31.7 m)
Deck width36 ft (10.9 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,345 (2020)
Projected traffic6,740 by 2040
Trucks3%
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 Savannah Avenue over I-75 built?

It was built in 1967, making it 58 years old in 2025.

What condition is Savannah Avenue over I-75 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does Savannah Avenue over I-75 carry?

About 6,345 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is Savannah Avenue over I-75?

The structure is 198 ft (60.3 m) long with a longest span of 104 ft (31.7 m) and a deck 36 ft wide.

Who owns Savannah Avenue over I-75?

It is owned by the State Highway Agency.