US Bridges

Newport RD over I-75

Good

Monroe County, Michigan · 6.2 MI NE of M-50 · Structure no. 000000000014570

Built
2022
3 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
218 ft
2 main spans
Daily traffic
12,400
2020 count
Owner
State
State Highway Agency

About this bridge

Newport RD over I-75 is a prestressed concrete stringer/multi-beam or girder carrying Newport RD over I-75 in Monroe County, Michigan. It was built in 2022, so it is 3 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 12,400 vehicles a day, projected to reach 13,700 by 2040. The structure is 218 ft (66.4 m) long and 47 ft wide.

Location

Open in Google Maps
CarriesNewport RD
CrossesI-75
Location6.2 MI NE of M-50
RouteCounty Highway 0
CountyMonroe County
StateMichigan
Coordinates42.0058, -83.31377
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.5 US tons
Inventory rating44.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadGreater than HL 93
Structure length218 ft (66.4 m)
Longest span107 ft (32.5 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,400 (2020)
Projected traffic13,700 by 2040
Trucks0%
Lanes on structure2
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Newport RD over I-75 built?

It was built in 2022, making it 3 years old in 2025.

What condition is Newport RD over I-75 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 March 2023.

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

About 12,400 vehicles per day (2020 count).

How long is Newport RD over I-75?

The structure is 218 ft (66.4 m) long with a longest span of 107 ft (32.5 m) and a deck 47 ft wide.

Who owns Newport RD over I-75?

It is owned by the State Highway Agency.