US Bridges

Parrent Road over Gibson Drain

Fair

Tuscola County, Michigan · Sec 19 Gilford Twp · Structure no. 000000000010595

Built
1979
46 years old
Condition
Fair
inspected May 2023
Type
Culvert
Steel
Length
22 ft
1 main span
Daily traffic
43
2009 count
Owner
County
County Highway Agency

About this bridge

Parrent Road over Gibson Drain is a steel culvert carrying Parrent Road over Gibson Drain in Tuscola County, Michigan. It was built in 1979, so it is 46 years old, younger 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 6 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 43 vehicles a day, projected to reach 78 by 2029. The structure is 22 ft (6.6 m) long. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesParrent Road
CrossesGibson Drain
LocationSec 19 Gilford Twp
RouteCounty Highway 0
CountyTuscola County
StateMichigan
Coordinates43.51522, -83.69885
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating34.6 US tons
Inventory rating20.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadH 20
Structure length22 ft (6.6 m)
Longest span21 ft (6.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic43 (2009)
Projected traffic78 by 2029
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Parrent Road over Gibson Drain built?

It was built in 1979, making it 46 years old in 2025.

What condition is Parrent Road over Gibson 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 May 2023.

How much traffic does Parrent Road over Gibson Drain carry?

About 43 vehicles per day (2009 count).

How long is Parrent Road over Gibson Drain?

The structure is 22 ft (6.6 m) long with a longest span of 21 ft (6.5 m).

Who owns Parrent Road over Gibson Drain?

It is owned by the County Highway Agency.