US Bridges

Cotter Road over Quanicassee River

FairPosted for load

Bay County, Michigan · 3/8 MI N of Munger RD · Structure no. 000000000000736

Built
1975
50 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
45 ft
1 main span
Daily traffic
87
2000 count
Owner
County
County Highway Agency

About this bridge

Cotter Road over Quanicassee River is a wood or timber stringer/multi-beam or girder carrying Cotter Road over Quanicassee River in Bay County, Michigan. It was built in 1975, so it is 50 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 87 vehicles a day, roughly 10% of them trucks, projected to reach 104 by 2020. The structure is 45 ft (13.7 m) long and 40 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCotter Road
CrossesQuanicassee River
Location3/8 MI N of Munger RD
RouteCounty Highway 0
CountyBay County
StateMichigan
Coordinates43.52784, -83.71906
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 15
Structure length45 ft (13.7 m)
Longest span43 ft (13.1 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic87 (2000)
Projected traffic104 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$430,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Cotter Road over Quanicassee River built?

It was built in 1975, making it 50 years old in 2025.

What condition is Cotter Road over Quanicassee 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 April 2024.

How much traffic does Cotter Road over Quanicassee River carry?

About 87 vehicles per day (2000 count), of which roughly 10% are trucks.

How long is Cotter Road over Quanicassee River?

The structure is 45 ft (13.7 m) long with a longest span of 43 ft (13.1 m) and a deck 40 ft wide.

Who owns Cotter Road over Quanicassee River?

It is owned by the County Highway Agency.