US Bridges

Walnut Street over Holly Drain

Fair

Shiawassee County, Michigan · In the Village of Vernon · Structure no. 000000000009895

Built
1987
38 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
45 ft
2 main spans
Daily traffic
90
Owner
City
City or Municipal Highway Agency

About this bridge

Walnut Street over Holly Drain is a concrete culvert carrying Walnut Street over Holly Drain in Shiawassee County, Michigan. It was built in 1987, so it is 38 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 90 vehicles a day, roughly 2% of them trucks, projected to reach 170 by 1998. The structure is 45 ft (13.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesWalnut Street
CrossesHolly Drain
LocationIn the Village of Vernon
RouteCity Street 0
Coordinates42.93719, -84.03316
Functional classRural Minor 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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating39.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20 + Mod
Structure length45 ft (13.7 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (—)
Projected traffic170 by 1998
Trucks2%
Lanes on structure2
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 Walnut Street over Holly Drain built?

It was built in 1987, making it 38 years old in 2025.

What condition is Walnut Street over Holly 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 August 2024.

How much traffic does Walnut Street over Holly Drain carry?

About 90 vehicles per day (latest count), of which roughly 2% are trucks.

How long is Walnut Street over Holly Drain?

The structure is 45 ft (13.7 m) long with a longest span of 20 ft (6.1 m).

Who owns Walnut Street over Holly Drain?

It is owned by the City or Municipal Highway Agency.