US Bridges

Labo RD over I-275

PoorPosted for load

Monroe County, Michigan · 6 MI N of Monroe · Structure no. 000000000007215

Built
1973
52 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
370 ft
4 main spans
Daily traffic
500
1995 count
Owner
State
State Highway Agency

About this bridge

Labo RD over I-275 is a steel stringer/multi-beam or girder carrying Labo RD over I-275 in Monroe County, Michigan. It was built in 1973, so it is 52 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 500 vehicles a day, projected to reach 500 by 2015. The structure is 370 ft (112.9 m) long and 44 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLabo RD
CrossesI-275
Location6 MI N of Monroe
RouteCounty Highway 0
CountyMonroe County
StateMichigan
Coordinates42.02187, -83.34931
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating27.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length370 ft (112.9 m)
Longest span140 ft (42.8 m)
Deck width44 ft (13.5 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (1995)
Projected traffic500 by 2015
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
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 Labo RD over I-275 built?

It was built in 1973, making it 52 years old in 2025.

What condition is Labo RD over I-275 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does Labo RD over I-275 carry?

About 500 vehicles per day (1995 count).

How long is Labo RD over I-275?

The structure is 370 ft (112.9 m) long with a longest span of 140 ft (42.8 m) and a deck 44 ft wide.

Who owns Labo RD over I-275?

It is owned by the State Highway Agency.