US Bridges

37th Street over Gull Lake Outlet

Fair

Kalamazoo County, Michigan · Charleson Twp Sec 7 · Structure no. 000000000012891

Built
1974
51 years old
Condition
Fair
inspected October 2024
Type
Culvert
Steel
Length
21 ft
3 main spans
Daily traffic
360
2007 count
Owner
County
County Highway Agency

About this bridge

37th Street over Gull Lake Outlet is a steel culvert carrying 37th Street over Gull Lake Outlet in Kalamazoo County, Michigan. It was built in 1974, so it is 51 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 360 vehicles a day, roughly 3% of them trucks, projected to reach 650 by 2027. The structure is 21 ft (6.5 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

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Carries37th Street
CrossesGull Lake Outlet
LocationCharleson Twp Sec 7
RouteCounty Highway 0
CountyKalamazoo County
StateMichigan
Coordinates42.31508, -85.40138
Functional classRural Major 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length21 ft (6.5 m)
Longest span5 ft (1.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic360 (2007)
Projected traffic650 by 2027
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 37th Street over Gull Lake Outlet built?

It was built in 1974, making it 51 years old in 2025.

What condition is 37th Street over Gull Lake Outlet 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 October 2024.

How much traffic does 37th Street over Gull Lake Outlet carry?

About 360 vehicles per day (2007 count), of which roughly 3% are trucks.

How long is 37th Street over Gull Lake Outlet?

The structure is 21 ft (6.5 m) long with a longest span of 5 ft (1.6 m).

Who owns 37th Street over Gull Lake Outlet?

It is owned by the County Highway Agency.