US Bridges

NB Crooks RD over I-75

Fair

Oakland County, Michigan · In Troy · Structure no. 000000000008076

Built
1990
35 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
282 ft
4 main spans
Daily traffic
21,500
1990 count
Owner
State
State Highway Agency

About this bridge

NB Crooks RD over I-75 is a steel continuous stringer/multi-beam or girder carrying NB Crooks RD over I-75 in Oakland County, Michigan. It was built in 1990, so it is 35 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 21,500 vehicles a day, roughly 3% of them trucks, projected to reach 21,500 by 2010. The structure is 282 ft (85.9 m) long and 56 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNB Crooks RD
CrossesI-75
LocationIn Troy
RouteCounty Highway 2059
CountyOakland County
StateMichigan
Coordinates42.60452, -83.169
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.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating40.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length282 ft (85.9 m)
Longest span95 ft (28.9 m)
Deck width56 ft (17.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,500 (1990)
Projected traffic21,500 by 2010
Trucks3%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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 NB Crooks RD over I-75 built?

It was built in 1990, making it 35 years old in 2025.

What condition is NB Crooks 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 November 2024.

How much traffic does NB Crooks RD over I-75 carry?

About 21,500 vehicles per day (1990 count), of which roughly 3% are trucks.

How long is NB Crooks RD over I-75?

The structure is 282 ft (85.9 m) long with a longest span of 95 ft (28.9 m) and a deck 56 ft wide.

Who owns NB Crooks RD over I-75?

It is owned by the State Highway Agency.