US Bridges

Opdyke RD over M-59

Good

Oakland County, Michigan · E Lts of Pontiac · Structure no. 000000000007839

Built
1965
60 years old, rebuilt 2009
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
234 ft
4 main spans
Daily traffic
16,460
1974 count
Owner
State
State Highway Agency

About this bridge

Opdyke RD over M-59 is a steel stringer/multi-beam or girder carrying Opdyke RD over M-59 in Oakland County, Michigan. It was built in 1965 and reconstructed in 2009, 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 16,460 vehicles a day, roughly 3% of them trucks, projected to reach 33,223 by 2030. The structure is 234 ft (71.2 m) long and 78 ft wide.

CarriesOpdyke RD
CrossesM-59
LocationE Lts of Pontiac
RouteCounty Highway 2059
Coordinates42.64169, -83.2498
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than 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 rating93.3 US tons
Inventory rating55.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length234 ft (71.2 m)
Longest span83 ft (25.2 m)
Deck width78 ft (23.8 m)
Roadway width63 ft (19.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,460 (1974)
Projected traffic33,223 by 2030
Trucks3%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 proposedDeck replacement with only incidental widening
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Opdyke RD over M-59 built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2009.

What condition is Opdyke RD over M-59 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does Opdyke RD over M-59 carry?

About 16,460 vehicles per day (1974 count), of which roughly 3% are trucks.

How long is Opdyke RD over M-59?

The structure is 234 ft (71.2 m) long with a longest span of 83 ft (25.2 m) and a deck 78 ft wide.

Who owns Opdyke RD over M-59?

It is owned by the State Highway Agency.