US Bridges

North River Road over Catfish Channel

PoorPosted for load

Macomb County, Michigan · 0.2 MI E of Conger Bay · Structure no. 000000000006320

Built
1966
59 years old
Condition
Poor
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
124 ft
4 main spans
Daily traffic
6,300
2019 count
Owner
County
County Highway Agency

About this bridge

North River Road over Catfish Channel is a prestressed concrete box beam or girders - multiple carrying North River Road over Catfish Channel in Macomb County, Michigan. It was built in 1966, so it is 59 years old, older 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 3 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. Its operating status is: posted for load restriction.

It carries about 6,300 vehicles a day, roughly 2% of them trucks, projected to reach 6,700 by 2039. The structure is 124 ft (37.9 m) long and 30 ft wide. If it were closed, the detour would be 124.9 mi (201 km).

CarriesNorth River Road
CrossesCatfish Channel
Location0.2 MI E of Conger Bay
RouteCounty Highway 0
Coordinates42.59518, -82.78926
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating34.7 US tons
Inventory rating20.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadH 15
Structure length124 ft (37.9 m)
Longest span30 ft (9.1 m)
Deck width30 ft (9.1 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,300 (2019)
Projected traffic6,700 by 2039
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed124.9 mi (201 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 North River Road over Catfish Channel built?

It was built in 1966, making it 59 years old in 2025.

What condition is North River Road over Catfish Channel 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 2024.

How much traffic does North River Road over Catfish Channel carry?

About 6,300 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is North River Road over Catfish Channel?

The structure is 124 ft (37.9 m) long with a longest span of 30 ft (9.1 m) and a deck 30 ft wide.

Who owns North River Road over Catfish Channel?

It is owned by the County Highway Agency.