US Bridges

Lenawee Co.Line RD over S Branch Macon Drain

FairPosted for load

Monroe County, Michigan · .85 MI N Brewer RD · Structure no. 000000000007252

Built
1950
75 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
100
2016 count
Owner
County
County Highway Agency

About this bridge

Lenawee Co.Line RD over S Branch Macon Drain is a steel stringer/multi-beam or girder carrying Lenawee Co.Line RD over S Branch Macon Drain in Monroe County, Michigan. It was built in 1950, so it is 75 years old, older 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 5 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 100 vehicles a day, roughly 2% of them trucks, projected to reach 115 by 2036. The structure is 50 ft (15.2 m) long and 30 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesLenawee Co.Line RD
CrossesS Branch Macon Drain
Location.85 MI N Brewer RD
RouteCounty Highway 5801
Coordinates41.95649, -83.77072
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.4 US tons
Inventory rating27.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length50 ft (15.2 m)
Longest span49 ft (14.8 m)
Deck width30 ft (9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2016)
Projected traffic115 by 2036
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$156,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Lenawee Co.Line RD over S Branch Macon Drain built?

It was built in 1950, making it 75 years old in 2025.

What condition is Lenawee Co.Line RD over S Branch Macon Drain 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 S Branch Macon Drain carry?

About 100 vehicles per day (2016 count), of which roughly 2% are trucks.

How long is Lenawee Co.Line RD over S Branch Macon Drain?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (14.8 m) and a deck 30 ft wide.

Who owns Lenawee Co.Line RD over S Branch Macon Drain?

It is owned by the County Highway Agency.