US Bridges

Ready RD over I-75

Poor

Monroe County, Michigan · In S Rockwood · Structure no. 000000000007203

Built
1956
69 years old
Condition
Poor
inspected June 2024
Type
Tee Beam
Concrete Continuous
Length
303 ft
4 main spans
Daily traffic
680
1974 count
Owner
State
State Highway Agency

About this bridge

Ready RD over I-75 is a concrete continuous tee beam carrying Ready RD over I-75 in Monroe County, Michigan. It was built in 1956, so it is 69 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 680 vehicles a day, projected to reach 680 by 1977. The structure is 303 ft (92.3 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesReady RD
CrossesI-75
LocationIn S Rockwood
RouteCity Street 2057
CountyMonroe County
StateMichigan
Coordinates42.05197, -83.26971
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length303 ft (92.3 m)
Longest span90 ft (27.4 m)
Deck width31 ft (9.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic680 (1974)
Projected traffic680 by 1977
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 Ready RD over I-75 built?

It was built in 1956, making it 69 years old in 2025.

What condition is Ready RD over I-75 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

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

About 680 vehicles per day (1974 count).

How long is Ready RD over I-75?

The structure is 303 ft (92.3 m) long with a longest span of 90 ft (27.4 m) and a deck 31 ft wide.

Who owns Ready RD over I-75?

It is owned by the State Highway Agency.