US Bridges

I-275 NB Collector over Schoolcraft RD

Fair

Wayne County, Michigan · 0.2 MI W of Livonia · Structure no. 000000000011982

Built
1971
54 years old, rebuilt 2001
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
294 ft
4 main spans
Daily traffic
65,653
2007 count
Owner
State
State Highway Agency

About this bridge

I-275 NB Collector over Schoolcraft RD is a prestressed concrete stringer/multi-beam or girder carrying I-275 NB Collector over Schoolcraft RD in Wayne County, Michigan. It was built in 1971 and reconstructed in 2001, so it is 54 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 65,653 vehicles a day, roughly 6% of them trucks, projected to reach 74,210 by 2018. The structure is 294 ft (89.6 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-275 NB Collector
CrossesSchoolcraft RD
Location0.2 MI W of Livonia
RouteInterstate 275
CountyWayne County
StateMichigan
Coordinates42.38298, -83.43642
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.6 US tons
Inventory rating44.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length294 ft (89.6 m)
Longest span97 ft (29.5 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65,653 (2007)
Projected traffic74,210 by 2018
Trucks6%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-275 NB Collector over Schoolcraft RD built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2001.

What condition is I-275 NB Collector over Schoolcraft RD 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 September 2024.

How much traffic does I-275 NB Collector over Schoolcraft RD carry?

About 65,653 vehicles per day (2007 count), of which roughly 6% are trucks.

How long is I-275 NB Collector over Schoolcraft RD?

The structure is 294 ft (89.6 m) long with a longest span of 97 ft (29.5 m) and a deck 31 ft wide.

Who owns I-275 NB Collector over Schoolcraft RD?

It is owned by the State Highway Agency.