US Bridges

Atwater Road over North Branch Cass River

Fair

Huron County, Michigan · 0.1 Mile East of M-19 · Structure no. 000000000003684

Built
1980
45 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
33 ft
2 main spans
Daily traffic
1,589
2010 count
Owner
City
City or Municipal Highway Agency

About this bridge

Atwater Road over North Branch Cass River is a concrete culvert carrying Atwater Road over North Branch Cass River in Huron County, Michigan. It was built in 1980, so it is 45 years old, younger 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 1,589 vehicles a day, projected to reach 2,870 by 2030. The structure is 33 ft (10.2 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesAtwater Road
CrossesNorth Branch Cass River
Location0.1 Mile East of M-19
RouteCity Street 0
CountyHuron County
StateMichigan
Coordinates43.71001, -82.93677
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length33 ft (10.2 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,589 (2010)
Projected traffic2,870 by 2030
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Atwater Road over North Branch Cass River built?

It was built in 1980, making it 45 years old in 2025.

What condition is Atwater Road over North Branch Cass 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 July 2024.

How much traffic does Atwater Road over North Branch Cass River carry?

About 1,589 vehicles per day (2010 count).

How long is Atwater Road over North Branch Cass River?

The structure is 33 ft (10.2 m) long with a longest span of 16 ft (4.9 m).

Who owns Atwater Road over North Branch Cass River?

It is owned by the City or Municipal Highway Agency.