US Bridges

Charles Moran RD over I-75 NB

Fair

Mackinac County, Michigan · 2.4 MI NE of M-123 · Structure no. 000000000005955

Built
1963
62 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
153 ft
3 main spans
Daily traffic
75
1992 count
Owner
State
State Highway Agency

About this bridge

Charles Moran RD over I-75 NB is a steel stringer/multi-beam or girder carrying Charles Moran RD over I-75 NB in Mackinac County, Michigan. It was built in 1963, so it is 62 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.

It carries about 75 vehicles a day, roughly 10% of them trucks, projected to reach 86 by 2012. The structure is 153 ft (46.7 m) long and 31 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesCharles Moran RD
CrossesI-75 NB
Location2.4 MI NE of M-123
RouteCounty Highway 4932
CountyMackinac County
StateMichigan
Coordinates45.99866, -84.73297
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating62.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length153 ft (46.7 m)
Longest span67 ft (20.3 m)
Deck width31 ft (9.3 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (1992)
Projected traffic86 by 2012
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed11.2 mi (18 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 Charles Moran RD over I-75 NB built?

It was built in 1963, making it 62 years old in 2025.

What condition is Charles Moran RD over I-75 NB 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 August 2024.

How much traffic does Charles Moran RD over I-75 NB carry?

About 75 vehicles per day (1992 count), of which roughly 10% are trucks.

How long is Charles Moran RD over I-75 NB?

The structure is 153 ft (46.7 m) long with a longest span of 67 ft (20.3 m) and a deck 31 ft wide.

Who owns Charles Moran RD over I-75 NB?

It is owned by the State Highway Agency.