US Bridges

N Eaton ST over Kalamazoo River

Good

Calhoun County, Michigan · 2 Blocks West of M-99 · Structure no. 000000000001395

Built
2007
18 years old
Condition
Good
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
78 ft
1 main span
Daily traffic
4,145
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N Eaton ST over Kalamazoo River is a prestressed concrete box beam or girders - multiple carrying N Eaton ST over Kalamazoo River in Calhoun County, Michigan. It was built in 2007, so it is 18 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 4,145 vehicles a day, roughly 12% of them trucks, projected to reach 5,583 by 2042. The structure is 78 ft (23.9 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesN Eaton ST
CrossesKalamazoo River
Location2 Blocks West of M-99
RouteCity Street 0
Coordinates42.24636, -84.75617
Functional classUrban Collector

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95 US tons
Inventory rating57 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length78 ft (23.9 m)
Longest span76 ft (23.2 m)
Deck width47 ft (14.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,145 (2022)
Projected traffic5,583 by 2042
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$27,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N Eaton ST over Kalamazoo River built?

It was built in 2007, making it 18 years old in 2025.

What condition is N Eaton ST over Kalamazoo 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 August 2024.

How much traffic does N Eaton ST over Kalamazoo River carry?

About 4,145 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is N Eaton ST over Kalamazoo River?

The structure is 78 ft (23.9 m) long with a longest span of 76 ft (23.2 m) and a deck 47 ft wide.

Who owns N Eaton ST over Kalamazoo River?

It is owned by the City or Municipal Highway Agency.