US Bridges

Cass City Road over Allen Drain #1

Good

Tuscola County, Michigan · Sec 20-29 Akron Twp · Structure no. 000000000010538

Built
2010
15 years old
Condition
Good
inspected April 2023
Type
Tee Beam
Concrete
Length
28 ft
1 main span
Daily traffic
75
2009 count
Owner
County
County Highway Agency

About this bridge

Cass City Road over Allen Drain #1 is a concrete tee beam carrying Cass City Road over Allen Drain #1 in Tuscola County, Michigan. It was built in 2010, so it is 15 years old, younger 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 75 vehicles a day, roughly 4% of them trucks, projected to reach 135 by 2029. The structure is 28 ft (8.5 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCass City Road
CrossesAllen Drain #1
LocationSec 20-29 Akron Twp
RouteCounty Highway 0
CountyTuscola County
StateMichigan
Coordinates43.59481, -83.5645
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.8 US tons
Inventory rating36.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span27 ft (8.1 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2009)
Projected traffic135 by 2029
Trucks4%
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 Cass City Road over Allen Drain #1 built?

It was built in 2010, making it 15 years old in 2025.

What condition is Cass City Road over Allen Drain #1 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 April 2023.

How much traffic does Cass City Road over Allen Drain #1 carry?

About 75 vehicles per day (2009 count), of which roughly 4% are trucks.

How long is Cass City Road over Allen Drain #1?

The structure is 28 ft (8.5 m) long with a longest span of 27 ft (8.1 m) and a deck 32 ft wide.

Who owns Cass City Road over Allen Drain #1?

It is owned by the County Highway Agency.