US Bridges

Portage Road over Gourd Neck Creek

Good

Kalamazoo County, Michigan · 0.4MI S/Portage Citylimit · Structure no. 000000000004634

Built
2006
19 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
39 ft
1 main span
Daily traffic
11,685
2019 count
Owner
County
County Highway Agency

About this bridge

Portage Road over Gourd Neck Creek is a prestressed concrete box beam or girders - multiple carrying Portage Road over Gourd Neck Creek in Kalamazoo County, Michigan. It was built in 2006, so it is 19 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 11,685 vehicles a day, roughly 3% of them trucks, projected to reach 15,738 by 2039. The structure is 39 ft (12 m) long and 44 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesPortage Road
CrossesGourd Neck Creek
Location0.4MI S/Portage Citylimit
RouteCounty Highway 3943
Coordinates42.15265, -85.56956
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating39.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length39 ft (12 m)
Longest span36 ft (11 m)
Deck width44 ft (13.4 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,685 (2019)
Projected traffic15,738 by 2039
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Portage Road over Gourd Neck Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is Portage Road over Gourd Neck 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 Portage Road over Gourd Neck Creek carry?

About 11,685 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Portage Road over Gourd Neck Creek?

The structure is 39 ft (12 m) long with a longest span of 36 ft (11 m) and a deck 44 ft wide.

Who owns Portage Road over Gourd Neck Creek?

It is owned by the County Highway Agency.