US Bridges

Parish Road over I-75

Good

Bay County, Michigan · 5.0 MI N of Kawkawlin · Structure no. 000000000000635

Built
1968
57 years old, rebuilt 2023
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
216 ft
2 main spans
Daily traffic
1,278
2019 count
Owner
State
State Highway Agency

About this bridge

Parish Road over I-75 is a steel continuous stringer/multi-beam or girder carrying Parish Road over I-75 in Bay County, Michigan. It was built in 1968 and reconstructed in 2023, so it is 57 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,278 vehicles a day, roughly 3% of them trucks, projected to reach 1,470 by 2039. The structure is 216 ft (65.8 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesParish Road
CrossesI-75
Location5.0 MI N of Kawkawlin
RouteCounty Highway 0
CountyBay County
StateMichigan
Coordinates43.71036, -84.01208
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than 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 rating64.3 US tons
Inventory rating38.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length216 ft (65.8 m)
Longest span108 ft (32.9 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,278 (2019)
Projected traffic1,470 by 2039
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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 Parish Road over I-75 built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2023.

What condition is Parish Road over I-75 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does Parish Road over I-75 carry?

About 1,278 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Parish Road over I-75?

The structure is 216 ft (65.8 m) long with a longest span of 108 ft (32.9 m) and a deck 32 ft wide.

Who owns Parish Road over I-75?

It is owned by the State Highway Agency.