US Bridges

Ellis Road over Conway-Cohoctah Union Dn

Fair

Livingston County, Michigan · Sec 8 Cohoctah Twp · Structure no. 000000000005850

Built
1953
72 years old
Condition
Fair
inspected September 2024
Type
Culvert
Steel
Length
21 ft
1 main span
Daily traffic
106
2013 count
Owner
County
County Highway Agency

About this bridge

Ellis Road over Conway-Cohoctah Union Dn is a steel culvert carrying Ellis Road over Conway-Cohoctah Union Dn in Livingston County, Michigan. It was built in 1953, so it is 72 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 106 vehicles a day, projected to reach 89 by 1977. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesEllis Road
CrossesConway-Cohoctah Union Dn
LocationSec 8 Cohoctah Twp
RouteCounty Highway 0
CountyLivingston County
StateMichigan
Coordinates42.75575, -84.00221
Functional classRural 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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.6 US tons
Inventory rating20 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20 + Mod
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic106 (2013)
Projected traffic89 by 1977
Trucks0%
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 Ellis Road over Conway-Cohoctah Union Dn built?

It was built in 1953, making it 72 years old in 2025.

What condition is Ellis Road over Conway-Cohoctah Union Dn 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 September 2024.

How much traffic does Ellis Road over Conway-Cohoctah Union Dn carry?

About 106 vehicles per day (2013 count).

How long is Ellis Road over Conway-Cohoctah Union Dn?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m).

Who owns Ellis Road over Conway-Cohoctah Union Dn?

It is owned by the County Highway Agency.