US Bridges

Deckerville Road over S Br Cass River I/C Drn

Fair

Sanilac County, Michigan · Sec 27-34 Evergreen Twp · Structure no. 000000000009538

Built
1930
95 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
73 ft
2 main spans
Daily traffic
1,023
2016 count
Owner
County
County Highway Agency

About this bridge

Deckerville Road over S Br Cass River I/C Drn is a steel stringer/multi-beam or girder carrying Deckerville Road over S Br Cass River I/C Drn in Sanilac County, Michigan. It was built in 1930, so it is 95 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 1,023 vehicles a day, roughly 20% of them trucks, projected to reach 1,847 by 2036. The structure is 73 ft (22.3 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesDeckerville Road
CrossesS Br Cass River I/C Drn
LocationSec 27-34 Evergreen Twp
RouteCounty Highway 7470
CountySanilac County
StateMichigan
Coordinates43.51743, -83.03896
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.5 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length73 ft (22.3 m)
Longest span35 ft (10.7 m)
Deck width34 ft (10.5 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,023 (2016)
Projected traffic1,847 by 2036
Trucks20%
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$695,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Deckerville Road over S Br Cass River I/C Drn built?

It was built in 1930, making it 95 years old in 2025.

What condition is Deckerville Road over S Br Cass River I/C Drn 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 June 2024.

How much traffic does Deckerville Road over S Br Cass River I/C Drn carry?

About 1,023 vehicles per day (2016 count), of which roughly 20% are trucks.

How long is Deckerville Road over S Br Cass River I/C Drn?

The structure is 73 ft (22.3 m) long with a longest span of 35 ft (10.7 m) and a deck 34 ft wide.

Who owns Deckerville Road over S Br Cass River I/C Drn?

It is owned by the County Highway Agency.