US Bridges

Island Road over Cox Drain

Poor

Clinton County, Michigan · 0.4 MI W of Forest Hill · Structure no. 000000000001981

Built
1981
44 years old
Condition
Poor
inspected October 2023
Type
Culvert
Steel
Length
20 ft
2 main spans
Daily traffic
180
1981 count
Owner
County
County Highway Agency

About this bridge

Island Road over Cox Drain is a steel culvert carrying Island Road over Cox Drain in Clinton County, Michigan. It was built in 1981, so it is 44 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 180 vehicles a day, projected to reach 325 by 2009. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIsland Road
CrossesCox Drain
Location0.4 MI W of Forest Hill
RouteCounty Highway 0
CountyClinton County
StateMichigan
Coordinates43.09021, -84.69173
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating98.9 US tons
Inventory rating76.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (1981)
Projected traffic325 by 2009
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Island Road over Cox Drain built?

It was built in 1981, making it 44 years old in 2025.

What condition is Island Road over Cox Drain in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.

How much traffic does Island Road over Cox Drain carry?

About 180 vehicles per day (1981 count).

How long is Island Road over Cox Drain?

The structure is 20 ft (6.1 m) long with a longest span of 10 ft (3 m).

Who owns Island Road over Cox Drain?

It is owned by the County Highway Agency.