US Bridges

Joslyn Road over Grand Trunk Western RR

Fair

Oakland County, Michigan · 2 MI S Int Joslyn & I-75 · Structure no. 000000000008266

Built
1932
93 years old, rebuilt 1972
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
97 ft
3 main spans
Daily traffic
13,938
2012 count
Owner
City
City or Municipal Highway Agency

About this bridge

Joslyn Road over Grand Trunk Western RR is a steel continuous stringer/multi-beam or girder carrying Joslyn Road over Grand Trunk Western RR in Oakland County, Michigan. It was built in 1932 and reconstructed in 1972, so it is 93 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 13,938 vehicles a day, roughly 4% of them trucks, projected to reach 17,007 by 2032. The structure is 97 ft (29.7 m) long and 62 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesJoslyn Road
CrossesGrand Trunk Western RR
Location2 MI S Int Joslyn & I-75
RouteCity Street 2059
CountyOakland County
StateMichigan
Coordinates42.67405, -83.28067
Functional classUrban Other Principal Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
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 rating72.9 US tons
Inventory rating43.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length97 ft (29.7 m)
Longest span32 ft (9.8 m)
Deck width62 ft (18.9 m)
Roadway width53 ft (16.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,938 (2012)
Projected traffic17,007 by 2032
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Joslyn Road over Grand Trunk Western RR built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1972.

What condition is Joslyn Road over Grand Trunk Western RR 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 July 2024.

How much traffic does Joslyn Road over Grand Trunk Western RR carry?

About 13,938 vehicles per day (2012 count), of which roughly 4% are trucks.

How long is Joslyn Road over Grand Trunk Western RR?

The structure is 97 ft (29.7 m) long with a longest span of 32 ft (9.8 m) and a deck 62 ft wide.

Who owns Joslyn Road over Grand Trunk Western RR?

It is owned by the City or Municipal Highway Agency.