US Bridges

146 TH Ave over I-196

Fair

Allegan County, Michigan · 1.2 MI S of Ottawa Col · Structure no. 000000000000132

Built
1972
53 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
396 ft
5 main spans
Daily traffic
1,893
1997 count
Owner
State
State Highway Agency

About this bridge

146 TH Ave over I-196 is a steel stringer/multi-beam or girder carrying 146 TH Ave over I-196 in Allegan County, Michigan. It was built in 1972, so it is 53 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 1,893 vehicles a day, roughly 2% of them trucks, projected to reach 560 by 2007. The structure is 396 ft (120.6 m) long and 44 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries146 TH Ave
CrossesI-196
Location1.2 MI S of Ottawa Col
RouteCounty Highway 386
CountyAllegan County
StateMichigan
Coordinates42.75476, -86.05671
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68.6 US tons
Inventory rating41.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length396 ft (120.6 m)
Longest span113 ft (34.4 m)
Deck width44 ft (13.5 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,893 (1997)
Projected traffic560 by 2007
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$151,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was 146 TH Ave over I-196 built?

It was built in 1972, making it 53 years old in 2025.

What condition is 146 TH Ave over I-196 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 May 2023.

How much traffic does 146 TH Ave over I-196 carry?

About 1,893 vehicles per day (1997 count), of which roughly 2% are trucks.

How long is 146 TH Ave over I-196?

The structure is 396 ft (120.6 m) long with a longest span of 113 ft (34.4 m) and a deck 44 ft wide.

Who owns 146 TH Ave over I-196?

It is owned by the State Highway Agency.