US Bridges

Petersburg Road over Middle Branch Macon Drai

Fair

Monroe County, Michigan · 0.1 MI N of Kent Road · Structure no. 000000000007333

Built
1990
35 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
66 ft
2 main spans
Daily traffic
40
2016 count
Owner
County
County Highway Agency

About this bridge

Petersburg Road over Middle Branch Macon Drai is a prestressed concrete box beam or girders - multiple carrying Petersburg Road over Middle Branch Macon Drai in Monroe County, Michigan. It was built in 1990, so it is 35 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 40 vehicles a day, roughly 3% of them trucks, projected to reach 46 by 2036. The structure is 66 ft (20.1 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesPetersburg Road
CrossesMiddle Branch Macon Drai
Location0.1 MI N of Kent Road
RouteCounty Highway 0
CountyMonroe County
StateMichigan
Coordinates41.97946, -83.71232
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating83.6 US tons
Inventory rating50 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length66 ft (20.1 m)
Longest span32 ft (9.7 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2016)
Projected traffic46 by 2036
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Petersburg Road over Middle Branch Macon Drai built?

It was built in 1990, making it 35 years old in 2025.

What condition is Petersburg Road over Middle Branch Macon Drai 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 Petersburg Road over Middle Branch Macon Drai carry?

About 40 vehicles per day (2016 count), of which roughly 3% are trucks.

How long is Petersburg Road over Middle Branch Macon Drai?

The structure is 66 ft (20.1 m) long with a longest span of 32 ft (9.7 m) and a deck 28 ft wide.

Who owns Petersburg Road over Middle Branch Macon Drai?

It is owned by the County Highway Agency.