US Bridges

Twenty-Fourth ST over Portage Creek

Good

Kalamazoo County, Michigan · 1.2 MI S of Vicksburg · Structure no. 000000000004636

Built
1949
76 years old, rebuilt 2010
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
70 ft
2 main spans
Daily traffic
3,672
2019 count
Owner
County
County Highway Agency

About this bridge

Twenty-Fourth ST over Portage Creek is a steel continuous stringer/multi-beam or girder carrying Twenty-Fourth ST over Portage Creek in Kalamazoo County, Michigan. It was built in 1949 and reconstructed in 2010, so it is 76 years old, older 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 3,672 vehicles a day, roughly 3% of them trucks, projected to reach 7,986 by 2029. The structure is 70 ft (21.3 m) long and 42 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesTwenty-Fourth ST
CrossesPortage Creek
Location1.2 MI S of Vicksburg
RouteCounty Highway 3949
Coordinates42.09414, -85.52949
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating102.8 US tons
Inventory rating79.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadGreater than HL 93
Structure length70 ft (21.3 m)
Longest span33 ft (10.1 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,672 (2019)
Projected traffic7,986 by 2029
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Twenty-Fourth ST over Portage Creek built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 2010.

What condition is Twenty-Fourth ST over Portage Creek 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 October 2024.

How much traffic does Twenty-Fourth ST over Portage Creek carry?

About 3,672 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Twenty-Fourth ST over Portage Creek?

The structure is 70 ft (21.3 m) long with a longest span of 33 ft (10.1 m) and a deck 42 ft wide.

Who owns Twenty-Fourth ST over Portage Creek?

It is owned by the County Highway Agency.