US Bridges

Gibraltar RD over I-75

Fair

Wayne County, Michigan · 0.7 MI N of M-85 · Structure no. 000000000011645

Built
1971
54 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
227 ft
2 main spans
Daily traffic
16,600
2010 count
Owner
State
State Highway Agency

About this bridge

Gibraltar RD over I-75 is a steel stringer/multi-beam or girder carrying Gibraltar RD over I-75 in Wayne County, Michigan. It was built in 1971, so it is 54 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 16,600 vehicles a day, roughly 5% of them trucks, projected to reach 19,090 by 2030. The structure is 227 ft (69.3 m) long and 94 ft wide.

Location

Open in Google Maps
CarriesGibraltar RD
CrossesI-75
Location0.7 MI N of M-85
RouteCounty Highway 2057
CountyWayne County
StateMichigan
Coordinates42.09538, -83.24155
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.7 US tons
Inventory rating45.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length227 ft (69.3 m)
Longest span117 ft (35.7 m)
Deck width94 ft (28.6 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,600 (2010)
Projected traffic19,090 by 2030
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
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 Gibraltar RD over I-75 built?

It was built in 1971, making it 54 years old in 2025.

What condition is Gibraltar RD 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 July 2024.

How much traffic does Gibraltar RD over I-75 carry?

About 16,600 vehicles per day (2010 count), of which roughly 5% are trucks.

How long is Gibraltar RD over I-75?

The structure is 227 ft (69.3 m) long with a longest span of 117 ft (35.7 m) and a deck 94 ft wide.

Who owns Gibraltar RD over I-75?

It is owned by the State Highway Agency.