US Bridges

Mercury Drive over Pottawattomie Bayou

Fair

Ottawa County, Michigan · 0.37 Miles South of 152nd · Structure no. 000000000008829

Built
1964
61 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
68 ft
1 main span
Daily traffic
12,368
2019 count
Owner
County
County Highway Agency

About this bridge

Mercury Drive over Pottawattomie Bayou is a steel stringer/multi-beam or girder carrying Mercury Drive over Pottawattomie Bayou in Ottawa County, Michigan. It was built in 1964, so it is 61 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 12,368 vehicles a day, roughly 5% of them trucks, projected to reach 22,340 by 2039. The structure is 68 ft (20.7 m) long and 37 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesMercury Drive
CrossesPottawattomie Bayou
Location0.37 Miles South of 152nd
RouteCounty Highway 2029
CountyOttawa County
StateMichigan
Coordinates43.03139, -86.16049
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
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
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 rating82.9 US tons
Inventory rating49.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length68 ft (20.7 m)
Longest span65 ft (19.8 m)
Deck width37 ft (11.3 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,368 (2019)
Projected traffic22,340 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Mercury Drive over Pottawattomie Bayou built?

It was built in 1964, making it 61 years old in 2025.

What condition is Mercury Drive over Pottawattomie Bayou 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 Mercury Drive over Pottawattomie Bayou carry?

About 12,368 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Mercury Drive over Pottawattomie Bayou?

The structure is 68 ft (20.7 m) long with a longest span of 65 ft (19.8 m) and a deck 37 ft wide.

Who owns Mercury Drive over Pottawattomie Bayou?

It is owned by the County Highway Agency.