US Bridges

Chapin Road over Weeks Drain

Good

Saginaw County, Michigan · 0.9 MI N of Ohara Road · Structure no. 000000000009350

Built
2019
6 years old
Condition
Good
inspected August 2023
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
25 ft
1 main span
Daily traffic
145
2008 count
Owner
County
County Highway Agency

About this bridge

Chapin Road over Weeks Drain is a aluminum, wrought iron, or cast iron culvert carrying Chapin Road over Weeks Drain in Saginaw County, Michigan. It was built in 2019, so it is 6 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 145 vehicles a day, roughly 5% of them trucks, projected to reach 152 by 2018. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesChapin Road
CrossesWeeks Drain
Location0.9 MI N of Ohara Road
RouteCounty Highway 0
Coordinates43.44579, -84.31058
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.8 US tons
Inventory rating60 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic145 (2008)
Projected traffic152 by 2018
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$670,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Chapin Road over Weeks Drain built?

It was built in 2019, making it 6 years old in 2025.

What condition is Chapin Road over Weeks Drain 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 August 2023.

How much traffic does Chapin Road over Weeks Drain carry?

About 145 vehicles per day (2008 count), of which roughly 5% are trucks.

How long is Chapin Road over Weeks Drain?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m).

Who owns Chapin Road over Weeks Drain?

It is owned by the County Highway Agency.