US Bridges

Davisburg RD over I-75

Fair

Oakland County, Michigan · 3.3 MI NW of M-10 · Structure no. 000000000008034

Built
1962
63 years old, rebuilt 2023
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
239 ft
5 main spans
Daily traffic
3,900
1974 count
Owner
State
State Highway Agency

About this bridge

Davisburg RD over I-75 is a steel stringer/multi-beam or girder carrying Davisburg RD over I-75 in Oakland County, Michigan. It was built in 1962 and reconstructed in 2023, so it is 63 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 3,900 vehicles a day, roughly 3% of them trucks, projected to reach 3,900 by 1977. The structure is 239 ft (72.9 m) long and 34 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesDavisburg RD
CrossesI-75
Location3.3 MI NW of M-10
RouteCounty Highway 6368
CountyOakland County
StateMichigan
Coordinates42.75856, -83.50635
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
Deck9 ExcellentNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length239 ft (72.9 m)
Longest span74 ft (22.5 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,900 (1974)
Projected traffic3,900 by 1977
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Davisburg RD over I-75 built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2023.

What condition is Davisburg RD over I-75 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 2023.

How much traffic does Davisburg RD over I-75 carry?

About 3,900 vehicles per day (1974 count), of which roughly 3% are trucks.

How long is Davisburg RD over I-75?

The structure is 239 ft (72.9 m) long with a longest span of 74 ft (22.5 m) and a deck 34 ft wide.

Who owns Davisburg RD over I-75?

It is owned by the State Highway Agency.