US Bridges

Grosse Ile Toll Br over Trenton Channel

FairPosted for load

Wayne County, Michigan · Bet.Riverview & Gross-Ile · Structure no. 000000000012306

Built
1913
112 years old
Condition
Fair
inspected August 2023
Type
Movable - Swing
Steel Continuous
Length
1,030 ft
1 main span
Daily traffic
—
1974 count
Owner
Private
Private (other than railroad)

About this bridge

Grosse Ile Toll Br over Trenton Channel is a steel continuous movable - swing carrying Grosse Ile Toll Br over Trenton Channel in Wayne County, Michigan. It was built in 1913, so it is 112 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. Its operating status is: posted for load restriction.

No traffic count is recorded. The structure is 1,030 ft (314 m) long and 25 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesGrosse Ile Toll Br
CrossesTrenton Channel
LocationBet.Riverview & Gross-Ile
RouteCity Street 0
CountyWayne County
StateMichigan
Coordinates42.17299, -83.16018
Functional classUrban Local

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour evaluation has not been made
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating12 US tons
Inventory rating0 US tons

Structure

Structure typeMovable - Swing
MaterialSteel Continuous
DeckOpen grating
Main spans1 (+4 approach)
Design loadHS 20 + Mod
Structure length1,030 ft (314 m)
Longest span180 ft (54.8 m)
Deck width25 ft (7.5 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic—
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollToll bridge
National Highway SystemNo

Ownership and planned work

OwnerPrivate (other than railroad)
Maintained byPrivate (other than railroad)
Historic statusListed on the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Grosse Ile Toll Br over Trenton Channel built?

It was built in 1913, making it 112 years old in 2025.

What condition is Grosse Ile Toll Br over Trenton Channel 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 August 2023.

How much traffic does Grosse Ile Toll Br over Trenton Channel carry?

No traffic count is recorded for this structure.

How long is Grosse Ile Toll Br over Trenton Channel?

The structure is 1,030 ft (314 m) long with a longest span of 180 ft (54.8 m) and a deck 25 ft wide.

Who owns Grosse Ile Toll Br over Trenton Channel?

It is owned by the Private (other than railroad).