US Bridges

Marshall Avenue over Mill Race

Fair

Calhoun County, Michigan · Marshall Michigan · Structure no. 000000000001418

Built
1980
45 years old, rebuilt 2008
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
24 ft
1 main span
Daily traffic
1,853
2005 count
Owner
City
City or Municipal Highway Agency

About this bridge

Marshall Avenue over Mill Race is a prestressed concrete box beam or girders - multiple carrying Marshall Avenue over Mill Race in Calhoun County, Michigan. It was built in 1980 and reconstructed in 2008, 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 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.

It carries about 1,853 vehicles a day, roughly 1% of them trucks, projected to reach 1,943 by 2025. The structure is 24 ft (7.3 m) long and 41 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMarshall Avenue
CrossesMill Race
LocationMarshall Michigan
RouteCity Street 0
Coordinates42.26269, -84.95417
Functional classUrban 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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.3 US tons
Inventory rating34.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span21 ft (6.4 m)
Deck width41 ft (12.5 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,853 (2005)
Projected traffic1,943 by 2025
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Marshall Avenue over Mill Race built?

It was built in 1980, making it 45 years old in 2025. It was reconstructed in 2008.

What condition is Marshall Avenue over Mill Race 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 July 2023.

How much traffic does Marshall Avenue over Mill Race carry?

About 1,853 vehicles per day (2005 count), of which roughly 1% are trucks.

How long is Marshall Avenue over Mill Race?

The structure is 24 ft (7.3 m) long with a longest span of 21 ft (6.4 m) and a deck 41 ft wide.

Who owns Marshall Avenue over Mill Race?

It is owned by the City or Municipal Highway Agency.