US Bridges

I-75 SB over Beaver Road

Fair

Bay County, Michigan · 3.0 MI W of Kawkawlin · Structure no. 000000000000634

Built
1967
58 years old, rebuilt 2021
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
124 ft
3 main spans
Daily traffic
11,638
2021 count
Owner
State
State Highway Agency

About this bridge

I-75 SB over Beaver Road is a steel stringer/multi-beam or girder carrying I-75 SB over Beaver Road in Bay County, Michigan. It was built in 1967 and reconstructed in 2021, so it is 58 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 11,638 vehicles a day, roughly 7% of them trucks, projected to reach 12,863 by 2041. The structure is 124 ft (37.7 m) long and 44 ft wide.

Location

Open in Google Maps
CarriesI-75 SB
CrossesBeaver Road
Location3.0 MI W of Kawkawlin
RouteInterstate 75
CountyBay County
StateMichigan
Coordinates43.66751, -84.0124
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 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 geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.5 US tons
Inventory rating44.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length124 ft (37.7 m)
Longest span50 ft (15.2 m)
Deck width44 ft (13.5 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,638 (2021)
Projected traffic12,863 by 2041
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-75 SB over Beaver Road built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2021.

What condition is I-75 SB over Beaver Road 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 September 2023.

How much traffic does I-75 SB over Beaver Road carry?

About 11,638 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is I-75 SB over Beaver Road?

The structure is 124 ft (37.7 m) long with a longest span of 50 ft (15.2 m) and a deck 44 ft wide.

Who owns I-75 SB over Beaver Road?

It is owned by the State Highway Agency.