US Bridges

Chapin Road over South Branch Bad River

Fair

Saginaw County, Michigan · 0.2 MI N of Cupp Road · Structure no. 000000000009333

Built
1985
40 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
176
2009 count
Owner
County
County Highway Agency

About this bridge

Chapin Road over South Branch Bad River is a prestressed concrete tee beam carrying Chapin Road over South Branch Bad River in Saginaw County, Michigan. It was built in 1985, so it is 40 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 176 vehicles a day, roughly 5% of them trucks, projected to reach 185 by 2019. The structure is 40 ft (12.2 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesChapin Road
CrossesSouth Branch Bad River
Location0.2 MI N of Cupp Road
RouteCounty Highway 0
CountySaginaw County
StateMichigan
Coordinates43.19843, -84.3067
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating80.1 US tons
Inventory rating48.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length40 ft (12.2 m)
Longest span39 ft (11.8 m)
Deck width26 ft (7.9 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic176 (2009)
Projected traffic185 by 2019
Trucks5%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Chapin Road over South Branch Bad River built?

It was built in 1985, making it 40 years old in 2025.

What condition is Chapin Road over South Branch Bad 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 June 2024.

How much traffic does Chapin Road over South Branch Bad River carry?

About 176 vehicles per day (2009 count), of which roughly 5% are trucks.

How long is Chapin Road over South Branch Bad River?

The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.8 m) and a deck 26 ft wide.

Who owns Chapin Road over South Branch Bad River?

It is owned by the County Highway Agency.