US Bridges

Hessen Road over Swan Creek

Good

St. Clair County, Michigan · Sec. 2-3 Ira Twp. · Structure no. 000000000010186

Built
2017
8 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
44 ft
1 main span
Daily traffic
150
2017 count
Owner
County
County Highway Agency

About this bridge

Hessen Road over Swan Creek is a concrete culvert carrying Hessen Road over Swan Creek in St. Clair County, Michigan. It was built in 2017, so it is 8 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 150 vehicles a day, roughly 12% of them trucks, projected to reach 180 by 2037. The structure is 44 ft (13.5 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHessen Road
CrossesSwan Creek
LocationSec. 2-3 Ira Twp.
RouteCounty Highway 0
CountySt. Clair County
StateMichigan
Coordinates42.70925, -82.65044
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 protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadGreater than HL 93
Structure length44 ft (13.5 m)
Longest span42 ft (12.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2017)
Projected traffic180 by 2037
Trucks12%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hessen Road over Swan Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is Hessen Road over Swan Creek 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 October 2023.

How much traffic does Hessen Road over Swan Creek carry?

About 150 vehicles per day (2017 count), of which roughly 12% are trucks.

How long is Hessen Road over Swan Creek?

The structure is 44 ft (13.5 m) long with a longest span of 42 ft (12.8 m).

Who owns Hessen Road over Swan Creek?

It is owned by the County Highway Agency.