US Bridges

Chapin Road over North Branch Bad River

Fair

Saginaw County, Michigan · 0.5 MI N of Colvin Road · Structure no. 000000000009382

Built
1995
30 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
170 ft
3 main spans
Daily traffic
55
2023 count
Owner
County
County Highway Agency

About this bridge

Chapin Road over North Branch Bad River is a prestressed concrete box beam or girders - multiple carrying Chapin Road over North Branch Bad River in Saginaw County, Michigan. It was built in 1995, so it is 30 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 6 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 55 vehicles a day, roughly 5% of them trucks, projected to reach 79 by 2033. The structure is 170 ft (51.8 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesChapin Road
CrossesNorth Branch Bad River
Location0.5 MI N of Colvin Road
RouteCounty Highway 0
CountySaginaw County
StateMichigan
Coordinates43.30192, -84.30962
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94.7 US tons
Inventory rating56.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length170 ft (51.8 m)
Longest span60 ft (18.2 m)
Deck width31 ft (9.4 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55 (2023)
Projected traffic79 by 2033
Trucks5%
Lanes on structure2
Traffic directionOne-lane bridge for two-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 North Branch Bad River built?

It was built in 1995, making it 30 years old in 2025.

What condition is Chapin Road over North 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 August 2024.

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

About 55 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Chapin Road over North Branch Bad River?

The structure is 170 ft (51.8 m) long with a longest span of 60 ft (18.2 m) and a deck 31 ft wide.

Who owns Chapin Road over North Branch Bad River?

It is owned by the County Highway Agency.