US Bridges

French Line Road over Elk Creek Drain

Good

Sanilac County, Michigan · Sec 19-30 Washington Twp · Structure no. 000000000009532

Built
1988
37 years old, rebuilt 2010
Condition
Good
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
104 ft
1 main span
Daily traffic
958
2009 count
Owner
County
County Highway Agency

About this bridge

French Line Road over Elk Creek Drain is a prestressed concrete box beam or girders - multiple carrying French Line Road over Elk Creek Drain in Sanilac County, Michigan. It was built in 1988 and reconstructed in 2010, so it is 37 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 958 vehicles a day, roughly 3% of them trucks, projected to reach 1,100 by 2029. The structure is 104 ft (31.7 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFrench Line Road
CrossesElk Creek Drain
LocationSec 19-30 Washington Twp
RouteCounty Highway 7438
Coordinates43.36659, -82.72722
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating85.8 US tons
Inventory rating66 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length104 ft (31.7 m)
Longest span102 ft (31.2 m)
Deck width35 ft (10.7 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic958 (2009)
Projected traffic1,100 by 2029
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 French Line Road over Elk Creek Drain built?

It was built in 1988, making it 37 years old in 2025. It was reconstructed in 2010.

What condition is French Line Road over Elk 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 May 2024.

How much traffic does French Line Road over Elk Creek Drain carry?

About 958 vehicles per day (2009 count), of which roughly 3% are trucks.

How long is French Line Road over Elk Creek Drain?

The structure is 104 ft (31.7 m) long with a longest span of 102 ft (31.2 m) and a deck 35 ft wide.

Who owns French Line Road over Elk Creek Drain?

It is owned by the County Highway Agency.