US Bridges

Carrigan Road over Brace Drain

Good

St. Clair County, Michigan · Sec 7 Fort Gratiot Twp · Structure no. 000000000010162

Built
2013
12 years old
Condition
Good
inspected October 2023
Type
Culvert
Steel
Length
22 ft
2 main spans
Daily traffic
265
1994 count
Owner
County
County Highway Agency

About this bridge

Carrigan Road over Brace Drain is a steel culvert carrying Carrigan Road over Brace Drain in St. Clair County, Michigan. It was built in 2013, so it is 12 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 265 vehicles a day, roughly 3% of them trucks, projected to reach 510 by 2014. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesCarrigan Road
CrossesBrace Drain
LocationSec 7 Fort Gratiot Twp
RouteCounty Highway 0
CountySt. Clair County
StateMichigan
Coordinates43.05938, -82.51237
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 within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating57.5 US tons
Inventory rating44.3 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length22 ft (6.7 m)
Longest span11 ft (3.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic265 (1994)
Projected traffic510 by 2014
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Carrigan Road over Brace Drain built?

It was built in 2013, making it 12 years old in 2025.

What condition is Carrigan Road over Brace 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 October 2023.

How much traffic does Carrigan Road over Brace Drain carry?

About 265 vehicles per day (1994 count), of which roughly 3% are trucks.

How long is Carrigan Road over Brace Drain?

The structure is 22 ft (6.7 m) long with a longest span of 11 ft (3.5 m).

Who owns Carrigan Road over Brace Drain?

It is owned by the County Highway Agency.