US Bridges

Beaver Road over Kawkawlin River

FairPosted for load

Bay County, Michigan · 200 Ft W of Four Mile RD · Structure no. 000000000000683

Built
1928
97 years old
Condition
Fair
inspected May 2024
Type
Girder and Floorbeam System
Concrete
Length
60 ft
1 main span
Daily traffic
3,404
2000 count
Owner
County
County Highway Agency

About this bridge

Beaver Road over Kawkawlin River is a concrete girder and floorbeam system carrying Beaver Road over Kawkawlin River in Bay County, Michigan. It was built in 1928, so it is 97 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. Its operating status is: posted for load restriction.

It carries about 3,404 vehicles a day, roughly 10% of them trucks, projected to reach 5,446 by 2020. The structure is 60 ft (18.2 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesBeaver Road
CrossesKawkawlin River
Location200 Ft W of Four Mile RD
RouteCounty Highway 938
CountyBay County
StateMichigan
Coordinates43.66734, -83.97012
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.5 US tons
Inventory rating25.4 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length60 ft (18.2 m)
Longest span54 ft (16.4 m)
Deck width27 ft (8.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,404 (2000)
Projected traffic5,446 by 2020
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Beaver Road over Kawkawlin River built?

It was built in 1928, making it 97 years old in 2025.

What condition is Beaver Road over Kawkawlin River 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 May 2024.

How much traffic does Beaver Road over Kawkawlin River carry?

About 3,404 vehicles per day (2000 count), of which roughly 10% are trucks.

How long is Beaver Road over Kawkawlin River?

The structure is 60 ft (18.2 m) long with a longest span of 54 ft (16.4 m) and a deck 27 ft wide.

Who owns Beaver Road over Kawkawlin River?

It is owned by the County Highway Agency.