US Bridges

Benner HWY over River Raisin South Br

Good

Lenawee County, Michigan · Carleton RD Intersection · Structure no. 000000000005583

Built
2012
13 years old
Condition
Good
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
58 ft
1 main span
Daily traffic
735
2012 count
Owner
County
County Highway Agency

About this bridge

Benner HWY over River Raisin South Br is a prestressed concrete box beam or girders - multiple carrying Benner HWY over River Raisin South Br in Lenawee County, Michigan. It was built in 2012, so it is 13 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 735 vehicles a day, roughly 2% of them trucks, projected to reach 1,328 by 2032. The structure is 58 ft (17.7 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesBenner HWY
CrossesRiver Raisin South Br
LocationCarleton RD Intersection
RouteCounty Highway 4631
Coordinates41.85806, -84.15974
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 protection8 Very GoodNo problems noted.
Last inspectionJune 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 adequacy7: Better than present minimum criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating80.7 US tons
Inventory rating62.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length58 ft (17.7 m)
Longest span57 ft (17.3 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic735 (2012)
Projected traffic1,328 by 2032
Trucks2%
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 Benner HWY over River Raisin South Br built?

It was built in 2012, making it 13 years old in 2025.

What condition is Benner HWY over River Raisin South Br 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 June 2024.

How much traffic does Benner HWY over River Raisin South Br carry?

About 735 vehicles per day (2012 count), of which roughly 2% are trucks.

How long is Benner HWY over River Raisin South Br?

The structure is 58 ft (17.7 m) long with a longest span of 57 ft (17.3 m) and a deck 35 ft wide.

Who owns Benner HWY over River Raisin South Br?

It is owned by the County Highway Agency.