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Every bridge in Mackinac County, Michigan

Name: Every bridge in Mackinac County, Michigan
Creator: Bridge Report Card
License: https://creativecommons.org/publicdomain/zero/1.0/

63 inventoried bridges, busiest first

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Mackinac County, Michigan, has 63 bridges in the 2025 National Bridge Inventory: 17 rated good, 36 fair, and 10 poor (as of August 20, 2026).
This index lists every one of them, busiest first; each links to its own condition record.

Bridge	Built	Vehicles/day	Condition
Us-2\|i-75 Bl over I-75 NB	1957	7,550	Fair
US-2 over Cut River	1947	4,450	Fair
I-75 SB over Carp River	1964	4,400	Fair
I-75 SB over Mackinac Trail	1963	4,400	Fair
US-2 over Brevort River	2019	4,400	Good
I-75 Bl over I-75 NB	1960	4,350	Fair
US-2 over Canadian National RR	1938	4,114	Poor
US-2 over Millecoquin River	1940	3,813	Fair
US-2 over Davenport Creek	1939	3,668	Fair
US-2 over Hog Island Creek	1939	3,668	Fair
US-2 over Black River	1939	3,586	Poor
I-75 over Elmhirst Creek	1963	3,016	Poor
I-75 NB over Cheeseman Rd	1960	2,555	Poor
I-75 NB over Portage St	1960	2,555	Fair
I-75 SB over Cheeseman Rd	1960	2,555	Poor
I-75 SB over Portage St	1960	2,555	Fair
I-75 NB over Carp River	1964	2,039	Fair
I-75 NB over Mackinac Trail	1963	2,039	Fair
Mackinac Trl. FH41 over Rabbits Back Creek	1930	2,020	Fair
I-75 SB over Pine River	1963	1,825	Fair
M-123 over I-75 NB	1963	1,808	Poor
Manistique Lake Ro over Portage Creek	1960	1,762	Fair
M-117 over Doe Creek	1954	1,760	Fair
I-75 NB over Pine River	1963	1,508	Fair
M-134 over I-75 NB	1963	1,404	Fair
M-134 over I-75 SB	1963	1,404	Fair
M-134 over Nunns Creek	1953	1,404	Fair
M-134 over Pine River	1958	1,404	Fair
Manistique Lake Ro over Portage Creek	1940	1,125	Fair
M-123 over Carp River	1961	1,041	Fair
M-134 over Mckays Creek	1993	975	Fair
Hill Island Road over Flower Bay Lake Huron	2018	606	Good
Carl Worth Rd FH40 over Little Brevort River	2013	480	Fair
Mackinac Trl FH41 over Clear Creek	1930	350	Fair
Hiawatha Trail over Millecoquins River	1992	305	Good
Cut River Road over Cut River	1985	250	Good
Hiawatha Trail over Black River	1990	250	Good
Island 8 Road over Hill Channel Lake Huron	1984	250	Good
St Ignace Rd FH84 over Nuns Creek	1985	220	Good
Mackinac Trl FH41 over Carp River	1927	200	Good
Usfs Rte 3108 over Little Brevoort River	1979	175	Fair
Taylor Road over Taylor Creek	1967	164	Good
Kenneth Road over N. Branch Carp River	1979	125	Fair
Kenneth Road over Taylor Creek	1974	125	Fair
Roadside Park Rd over Creek	1990	100	Good
Bay Rd over I-75 NB	1963	75	Good
Bay Rd over I-75 SB	1963	75	Fair
Charles Moran Rd over I-75 NB	1963	75	Fair
Charles Moran Rd over I-75 SB	1963	75	Good
East Lake Rd FH85 over Carp River	1986	75	Good
Kenneth Road over N Branch Carp River	1949	70	Fair
Rutledge Road over Munuscong River	2006	60	Good
Townline Road over Munescong River	1966	60	Fair
No Data Entered over Carp River	2024	50	Good
Usfs Rte 3458 over Carp River	1955	50	Poor
One Mile Road over Taylor Creek	1995	40	Good
Three Mile Road over Munuscong River	1978	40	Good
Kenneth Road over Taylor Creek	1975	37	Fair
Sherman Road over Shoe-pac River	1980	30	Poor
3332 over Carp River	1951	15	Fair
Usfs Rte 3445 over Carp River	1962	15	Poor
Orchard Hill Road over Hog Island Creek	1997	10	Poor
Usfs Rte 3303 over Brevoort River	1963	10	Fair

Source: FHWA National Bridge Inventory, 2025.

Mackinac County bridge conditions · Michigan bridges by county.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.