US Bridges

Chicago Road over Barnard Drain

Fair

Oakland County, Michigan · 0.2 MI S of Maple Road · Structure no. 000000000008312

Built
1971
54 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
35 ft
2 main spans
Daily traffic
12,700
1997 count
Owner
City
City or Municipal Highway Agency

About this bridge

Chicago Road over Barnard Drain is a concrete continuous culvert carrying Chicago Road over Barnard Drain in Oakland County, Michigan. It was built in 1971, so it is 54 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 12,700 vehicles a day, roughly 8% of them trucks, projected to reach 14,000 by 1990. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesChicago Road
CrossesBarnard Drain
Location0.2 MI S of Maple Road
RouteCity Street 0
CountyOakland County
StateMichigan
Coordinates42.54575, -83.1137
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length35 ft (10.7 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,700 (1997)
Projected traffic14,000 by 1990
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Chicago Road over Barnard Drain built?

It was built in 1971, making it 54 years old in 2025.

What condition is Chicago Road over Barnard Drain 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 April 2023.

How much traffic does Chicago Road over Barnard Drain carry?

About 12,700 vehicles per day (1997 count), of which roughly 8% are trucks.

How long is Chicago Road over Barnard Drain?

The structure is 35 ft (10.7 m) long with a longest span of 16 ft (4.9 m).

Who owns Chicago Road over Barnard Drain?

It is owned by the City or Municipal Highway Agency.