US Bridges

Capac Road over S Br Mill Creek Drain

Good

St. Clair County, Michigan · Sec 33-34 Lynn Twp · Structure no. 000000000010081

Built
2006
19 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
65 ft
1 main span
Daily traffic
2,050
2005 count
Owner
County
County Highway Agency

About this bridge

Capac Road over S Br Mill Creek Drain is a prestressed concrete box beam or girders - multiple carrying Capac Road over S Br Mill Creek Drain in St. Clair County, Michigan. It was built in 2006, so it is 19 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,050 vehicles a day, roughly 10% of them trucks, projected to reach 4,490 by 2025. The structure is 65 ft (19.8 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCapac Road
CrossesS Br Mill Creek Drain
LocationSec 33-34 Lynn Twp
RouteCounty Highway 7707
Coordinates43.08261, -82.9309
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating66 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length65 ft (19.8 m)
Longest span60 ft (18.3 m)
Deck width44 ft (13.3 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,050 (2005)
Projected traffic4,490 by 2025
Trucks10%
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 Capac Road over S Br Mill Creek Drain built?

It was built in 2006, making it 19 years old in 2025.

What condition is Capac Road over S Br Mill Creek 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 2024.

How much traffic does Capac Road over S Br Mill Creek Drain carry?

About 2,050 vehicles per day (2005 count), of which roughly 10% are trucks.

How long is Capac Road over S Br Mill Creek Drain?

The structure is 65 ft (19.8 m) long with a longest span of 60 ft (18.3 m) and a deck 44 ft wide.

Who owns Capac Road over S Br Mill Creek Drain?

It is owned by the County Highway Agency.