US Bridges

Michigan RD over I-675

Fair

Saginaw County, Michigan · 1.0 MI S of I-75 · Structure no. 000000000009146

Built
1971
54 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
314 ft
4 main spans
Daily traffic
4,050
1996 count
Owner
State
State Highway Agency

About this bridge

Michigan RD over I-675 is a steel stringer/multi-beam or girder carrying Michigan RD over I-675 in Saginaw 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 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 4,050 vehicles a day, roughly 3% of them trucks, projected to reach 2,260 by 2006. The structure is 314 ft (95.6 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMichigan RD
CrossesI-675
Location1.0 MI S of I-75
RouteCounty Highway 2004
CountySaginaw County
StateMichigan
Coordinates43.48878, -83.94605
Functional classUrban Other Principal 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating48.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length314 ft (95.6 m)
Longest span114 ft (34.7 m)
Deck width42 ft (12.9 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,050 (1996)
Projected traffic2,260 by 2006
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 Michigan RD over I-675 built?

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

What condition is Michigan RD over I-675 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 2024.

How much traffic does Michigan RD over I-675 carry?

About 4,050 vehicles per day (1996 count), of which roughly 3% are trucks.

How long is Michigan RD over I-675?

The structure is 314 ft (95.6 m) long with a longest span of 114 ft (34.7 m) and a deck 42 ft wide.

Who owns Michigan RD over I-675?

It is owned by the State Highway Agency.