US Bridges

Lenawee CO Line RD over N DR Mid Br Macon R

FairPosted for load

Monroe County, Michigan · 1.0 MI No of M 50 · Structure no. 000000000012681

Built
1994
31 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
65 ft
1 main span
Daily traffic
110
2016 count
Owner
County
County Highway Agency

About this bridge

Lenawee CO Line RD over N DR Mid Br Macon R is a prestressed concrete box beam or girders - multiple carrying Lenawee CO Line RD over N DR Mid Br Macon R in Monroe County, Michigan. It was built in 1994, so it is 31 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 110 vehicles a day, roughly 2% of them trucks, projected to reach 127 by 2036. The structure is 65 ft (19.8 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLenawee CO Line RD
CrossesN DR Mid Br Macon R
Location1.0 MI No of M 50
RouteCounty Highway 0
Coordinates41.99346, -83.77142
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating55.3 US tons
Inventory rating28.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length65 ft (19.8 m)
Longest span64 ft (19.4 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2016)
Projected traffic127 by 2036
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 Lenawee CO Line RD over N DR Mid Br Macon R built?

It was built in 1994, making it 31 years old in 2025.

What condition is Lenawee CO Line RD over N DR Mid Br Macon R in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does Lenawee CO Line RD over N DR Mid Br Macon R carry?

About 110 vehicles per day (2016 count), of which roughly 2% are trucks.

How long is Lenawee CO Line RD over N DR Mid Br Macon R?

The structure is 65 ft (19.8 m) long with a longest span of 64 ft (19.4 m) and a deck 34 ft wide.

Who owns Lenawee CO Line RD over N DR Mid Br Macon R?

It is owned by the County Highway Agency.