US Bridges

Sigler RD over I-275

Fair

Monroe County, Michigan · 1.5 MI S of Carleton · Structure no. 000000000007216

Built
1973
52 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
288 ft
2 main spans
Daily traffic
300
1995 count
Owner
State
State Highway Agency

About this bridge

Sigler RD over I-275 is a steel stringer/multi-beam or girder carrying Sigler 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 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 300 vehicles a day, roughly 3% of them trucks, projected to reach 300 by 2015. The structure is 288 ft (87.8 m) long and 44 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSigler RD
CrossesI-275
Location1.5 MI S of Carleton
RouteCounty Highway 0
CountyMonroe County
StateMichigan
Coordinates42.03614, -83.35342
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 9 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 rating82.1 US tons
Inventory rating49.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length288 ft (87.8 m)
Longest span144 ft (43.9 m)
Deck width44 ft (13.5 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (1995)
Projected traffic300 by 2015
Trucks3%
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 Sigler RD over I-275 built?

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

What condition is Sigler RD over I-275 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 October 2024.

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

About 300 vehicles per day (1995 count), of which roughly 3% are trucks.

How long is Sigler RD over I-275?

The structure is 288 ft (87.8 m) long with a longest span of 144 ft (43.9 m) and a deck 44 ft wide.

Who owns Sigler RD over I-275?

It is owned by the State Highway Agency.