US Bridges

Rosa Parks Ext Rmp over I-75 N Collector-Dist RD

Fair

Wayne County, Michigan · In Detroit · Structure no. 000000000011763

Built
1970
55 years old, rebuilt 2003
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
116 ft
1 main span
Daily traffic
9,000
1978 count
Owner
State
State Highway Agency

About this bridge

Rosa Parks Ext Rmp over I-75 N Collector-Dist RD is a steel stringer/multi-beam or girder carrying Rosa Parks Ext Rmp over I-75 N Collector-Dist RD in Wayne County, Michigan. It was built in 1970 and reconstructed in 2003, so it is 55 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 9,000 vehicles a day, roughly 3% of them trucks, projected to reach 9,000 by 1977. The structure is 116 ft (35.3 m) long and 27 ft wide.

Location

Open in Google Maps
CarriesRosa Parks Ext Rmp
CrossesI-75 N Collector-Dist RD
LocationIn Detroit
RouteCity Street 2000
CountyWayne County
StateMichigan
Coordinates42.33438, -83.07101
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating78.9 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length116 ft (35.3 m)
Longest span116 ft (35.3 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,000 (1978)
Projected traffic9,000 by 1977
Trucks3%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rosa Parks Ext Rmp over I-75 N Collector-Dist RD built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2003.

What condition is Rosa Parks Ext Rmp over I-75 N Collector-Dist RD 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 May 2023.

How much traffic does Rosa Parks Ext Rmp over I-75 N Collector-Dist RD carry?

About 9,000 vehicles per day (1978 count), of which roughly 3% are trucks.

How long is Rosa Parks Ext Rmp over I-75 N Collector-Dist RD?

The structure is 116 ft (35.3 m) long with a longest span of 116 ft (35.3 m) and a deck 27 ft wide.

Who owns Rosa Parks Ext Rmp over I-75 N Collector-Dist RD?

It is owned by the State Highway Agency.