US Bridges

Michigan Ave over Mdot RR Corridor

Poor

Livingston County, Michigan · In Howell · Structure no. 000000000005804

Built
1980
45 years old
Condition
Poor
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
79 ft
3 main spans
Daily traffic
6,900
1988 count
Owner
State
Other State Agency

About this bridge

Michigan Ave over Mdot RR Corridor is a prestressed concrete box beam or girders - multiple carrying Michigan Ave over Mdot RR Corridor in Livingston County, Michigan. It was built in 1980, so it is 45 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 6,900 vehicles a day, roughly 3% of them trucks, projected to reach 7,500 by 1977. The structure is 79 ft (24 m) long and 59 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMichigan Ave
CrossesMdot RR Corridor
LocationIn Howell
RouteCity Street 47
CountyLivingston County
StateMichigan
Coordinates42.609, -83.92839
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.4 US tons
Inventory rating41.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length79 ft (24 m)
Longest span29 ft (8.8 m)
Deck width59 ft (18 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,900 (1988)
Projected traffic7,500 by 1977
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther State Agency
Maintained byOther State Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Michigan Ave over Mdot RR Corridor built?

It was built in 1980, making it 45 years old in 2025.

What condition is Michigan Ave over Mdot RR Corridor in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2023.

How much traffic does Michigan Ave over Mdot RR Corridor carry?

About 6,900 vehicles per day (1988 count), of which roughly 3% are trucks.

How long is Michigan Ave over Mdot RR Corridor?

The structure is 79 ft (24 m) long with a longest span of 29 ft (8.8 m) and a deck 59 ft wide.

Who owns Michigan Ave over Mdot RR Corridor?

It is owned by the Other State Agency.