US Bridges

Macon HWY over Middle Br of Macon River

Good

Lenawee County, Michigan · 0.2 MI S of Hack RD · Structure no. 000000000005654

Built
1998
27 years old
Condition
Good
inspected February 2025
Type
Slab
Wood or Timber
Length
22 ft
1 main span
Daily traffic
562
2005 count
Owner
County
County Highway Agency

About this bridge

Macon HWY over Middle Br of Macon River is a wood or timber slab carrying Macon HWY over Middle Br of Macon River in Lenawee County, Michigan. It was built in 1998, so it is 27 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 562 vehicles a day, roughly 1% of them trucks, projected to reach 700 by 2025. The structure is 22 ft (6.7 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesMacon HWY
CrossesMiddle Br of Macon River
Location0.2 MI S of Hack RD
RouteCounty Highway 0
Coordinates42.07545, -83.8575
Functional classRural Local

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 protection8 Very GoodNo problems noted.
Last inspectionFebruary 2025
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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating51.7 US tons
Inventory rating36.9 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span21 ft (6.3 m)
Deck width31 ft (9.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic562 (2005)
Projected traffic700 by 2025
Trucks1%
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 Macon HWY over Middle Br of Macon River built?

It was built in 1998, making it 27 years old in 2025.

What condition is Macon HWY over Middle Br of Macon River 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 February 2025.

How much traffic does Macon HWY over Middle Br of Macon River carry?

About 562 vehicles per day (2005 count), of which roughly 1% are trucks.

How long is Macon HWY over Middle Br of Macon River?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.3 m) and a deck 31 ft wide.

Who owns Macon HWY over Middle Br of Macon River?

It is owned by the County Highway Agency.