US Bridges

Bridge Street over Kalamazoo River Mill Br

Fair

Allegan County, Michigan · In Plainwell · Structure no. 000000000000323

Built
1975
50 years old
Condition
Fair
inspected August 2023
Type
Culvert
Steel
Length
60 ft
3 main spans
Daily traffic
600
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Bridge Street over Kalamazoo River Mill Br is a steel culvert carrying Bridge Street over Kalamazoo River Mill Br in Allegan County, Michigan. It was built in 1975, so it is 50 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.

It carries about 600 vehicles a day, roughly 6% of them trucks, projected to reach 650 by 2042. The structure is 60 ft (18.2 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesBridge Street
CrossesKalamazoo River Mill Br
LocationIn Plainwell
RouteCounty Highway 0
CountyAllegan County
StateMichigan
Coordinates42.44275, -85.64437
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.4 US tons
Inventory rating36.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadH 20
Structure length60 ft (18.2 m)
Longest span15 ft (4.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2022)
Projected traffic650 by 2042
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$150,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Bridge Street over Kalamazoo River Mill Br built?

It was built in 1975, making it 50 years old in 2025.

What condition is Bridge Street over Kalamazoo River Mill Br 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 August 2023.

How much traffic does Bridge Street over Kalamazoo River Mill Br carry?

About 600 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Bridge Street over Kalamazoo River Mill Br?

The structure is 60 ft (18.2 m) long with a longest span of 15 ft (4.5 m).

Who owns Bridge Street over Kalamazoo River Mill Br?

It is owned by the City or Municipal Highway Agency.