I-75 NB over Carp River

Fair Condition62 years old2,039 vehicles/day

Location

StateMichigan
CountyMackinac
Location4.6 Mi N Of M-123
CarriesI-75 NB
CrossesCarp River
Coordinates46.02362, -84.71154

Condition Ratings

Overall ConditionFair
Deck7 (Good)
Superstructure6 (Satisfactory)
Substructure7 (Good)
Channel/Waterway7 (Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length302.8 ft (92.3 m)
Max Span67.9 ft (20.7 m)
Deck Width43.0 ft (13.1 m)
Deck Area1209.1 sq m
Main Spans3
Year Built1964

Traffic

Avg Daily Traffic2,039 (2007)
Truck Traffic9%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number000000000005939

Nearby Bridges

I-75 SB over Carp River 0.0 mi Fair Mackinac Trl Fh41 over Carp River 0.5 mi Good I-75 SB over Mackinac Trail 0.5 mi Fair I-75 NB over Mackinac Trail 0.5 mi Fair Usfs RTE 3445 over Carp River 0.8 mi Poor Charles Moran RD over I-75 NB 2.0 mi Fair Charles Moran RD over I-75 SB 2.0 mi Good M-134 over I-75 SB 2.7 mi Fair M-134 over I-75 NB 2.7 mi Fair M-134 over Pine River 3.5 mi Fair