US Bridges

Maple Street over Holly Drain

Fair

Shiawassee County, Michigan · In the Village of Vernon · Structure no. 000000000009894

Built
1965
60 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
37 ft
1 main span
Daily traffic
500
Owner
City
City or Municipal Highway Agency

About this bridge

Maple Street over Holly Drain is a prestressed concrete box beam or girders - multiple carrying Maple Street over Holly Drain in Shiawassee County, Michigan. It was built in 1965, so it is 60 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 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 500 vehicles a day, roughly 2% of them trucks, projected to reach 950 by 1998. The structure is 37 ft (11.2 m) long and 25 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMaple Street
CrossesHolly Drain
LocationIn the Village of Vernon
RouteCity Street 0
Coordinates42.93541, -84.02792
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: 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 rating89.3 US tons
Inventory rating53.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length37 ft (11.2 m)
Longest span35 ft (10.6 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (—)
Projected traffic950 by 1998
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 Maple Street over Holly Drain built?

It was built in 1965, making it 60 years old in 2025.

What condition is Maple 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 Maple Street over Holly Drain carry?

About 500 vehicles per day (latest count), of which roughly 2% are trucks.

How long is Maple Street over Holly Drain?

The structure is 37 ft (11.2 m) long with a longest span of 35 ft (10.6 m) and a deck 25 ft wide.

Who owns Maple Street over Holly Drain?

It is owned by the City or Municipal Highway Agency.