Total bridges
242
Public highway bridges in Tuscola County
County profile · official public datasets
Tuscola County, MI
242 public highway bridges tracked in the FHWA National Bridge Inventory: 33.9% rated Good, 61.2% Fair, 5% Poor.
- 242
- Public bridges
- 33.9%
- Good condition
- 5%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Tuscola County posts a top-quartile lowest Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 11%
- lowest Poor share in state
- 5%
- Poor-condition share
- 242
- public highway bridges
- 1980
- avg year built
Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.
Tuscola County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Tuscola County ranks #9 of 83 Michigan counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 5%). Tuscola County, Michigan contains 242 public highway bridges. Roughly 33.9% are rated “Good,” 61.2% “Fair,” and 5% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Good condition
33.9%
82 of 242 rated 7-9
Fair condition
61.2%
148 of 242 rated 5-6
Poor condition
5%
12 of 242 rated 4 or below
In-state Poor-share rank
#9 of 83
Among Michigan counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 242 NBI-tracked bridges by lowest applicable component rating.
Good 33.9% (82)
Fair 61.2% (148)
Poor 5% (12)
Tuscola County's Poor-condition bridges carry 20,782 vehicle crossings a day
That is 8.1% of the county's reported daily bridge traffic on 5% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 1,732 crossings a day against 1,031 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.
Computed over the 242 of 242 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
40.1% of Tuscola County's bridges have passed the 50-year mark
97 of the 242 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 33.9% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.
Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.
One structure carries 32.2% of the county's Poor-condition bridge traffic
M-46 over CHEBOYGAN & BRANCHES DRN, built 1939, carries 6,701 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 12-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 20,782 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Tuscola County's bridges were built
242 bridges with a recorded construction year, grouped by decade
- 1920s 2
1920–1929
2 bridges
- 1930s 11
1930–1939
11 bridges
- 1940s 4
1940–1949
4 bridges
- 1950s 3
1950–1959
3 bridges
- 1960s
1960–1969
39 bridges
- 1970s
1970–1979
70 bridges
- 1980s
1980–1989
46 bridges
- 1990s
1990–1999
28 bridges
- 2000s 18
2000–2009
18 bridges
- 2010s 18
2010–2019
18 bridges
- 2020s 3
2020–2029
3 bridges
What this shows Construction peaked in the 1970s, when 70 of the county's bridges still in the inventory were built, which is 28.9% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year (1980) matches the Michigan average (1976).
How Tuscola County compares with Michigan's closest counties by inventory size
The 5 Michigan counties nearest Tuscola County in number of bridges, with their condition splits. Its 5% Poor share is the 1st-lowest of these 6. Its average build year of 1980 against a peer-group mean of 1977 is in line with the group.
Showing the 5 closest of 82 Michigan counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Washtenaw County | 262 | 23.3% | 56.5% | 20.2% | 1975 |
| Ottawa County | 254 | 40.9% | 52.8% | 6.3% | 1977 |
| Allegan County | 244 | 24.2% | 59% | 16.8% | 1978 |
| Tuscola County (this page) | 242 | 33.9% | 61.2% | 5% | 1980 |
| Ingham County | 241 | 15.8% | 68.9% | 15.4% | 1972 |
| Lenawee County | 225 | 47.6% | 39.6% | 12.9% | 1981 |
Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Tuscola County's. Source: FHWA National Bridge Inventory, 2024 release.
Nationwide counties with similar inventory size or average build year
Two NBI-derived peer sets for Tuscola County, both outside Michigan so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside MI (242 bridges here).
- Glenn County, CA · 242 bridges
- Macoupin County, IL · 242 bridges
- Wabaunsee County, KS · 242 bridges
- Kings County, NY · 242 bridges
Similar average build year
Nearest mean year-built outside MI (1980 here).
- Tulsa County, OK · avg 1980 · 1,135 bridges
- Miami-Dade County, FL · avg 1980 · 1,057 bridges
- Pulaski County, AR · avg 1980 · 721 bridges
- McLennan County, TX · avg 1980 · 714 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (242)
SERGENT ROAD
FairOver: DEAD CREEK
SEC 7 ARBELA TWP, Tuscola, MI
Built 1979 Load: 15.6 t ADT: 80
DUTCHER ROAD
FairOver: NORTHWEST DRAIN OUTLET 1
SEC 5-8 GILFORD TWP, Tuscola, MI
Built 1970 Load: 17.8 t ADT: 980
DUTCHER ROAD
FairOver: NORTHWEST DRAIN
SEC 1-12 GILFORD TWP, Tuscola, MI
Built 1963 Load: 18.5 t ADT: 105
PARRENT ROAD
FairOver: GIBSON DRAIN
SEC 19 GILFORD TWP, Tuscola, MI
Built 1979 Load: 18.8 t ADT: 43
PLAIN ROAD
FairOver: SUCKER CREEK DRAIN
SEC 26-27 WELLS TWP, Tuscola, MI
Built 1963 Load: 19.8 t ADT: 160
ROSS ROAD
FairOver: S. O. DRAIN
SEC 20-29 WELLS TWP, Tuscola, MI
Built 1978 Load: 20.1 t ADT: 8
AKRON ROAD
FairOver: NORTHWEST DRAIN OUTLET 1
SEC 32 WISNER TWP, Tuscola, MI
Built 1924 Load: 21.4 t ADT: 80
MAIER ROAD
FairOver: FREMONT DRAIN
SEC 23 FREMONT TWP, Tuscola, MI
Built 1960 Load: 21.7 t ADT: 60
DRV OFF GARNER RD
FairOver: NW OUTLET NO. 3
0.2 MI S OF ALLEN RD, Tuscola, MI
Built 1980 Load: 21.7 t ADT: 5
BRADFORD ROAD
FairOver: NORTHWEST DRAIN OUTLET 2
SEC 3-4 GILFORD TWP, Tuscola, MI
Built 1963 Load: 21.9 t ADT: 165
ENGLEHART ROAD
FairOver: WHITE CREEK I/C DRAIN
SEC 22-23 NOVESTA TWP, Tuscola, MI
Built 1962 Load: 22.7 t ADT: 525
HOPPE ROAD
FairOver: STATE & COLLING I/C DRN
SEC 15-22 COLUMBIA TWP, Tuscola, MI
Built 1972 Load: 23.0 t ADT: 260
WHITE CREEK ROAD
FairOver: WHITE CREEK DRAIN #2
SEC 13-14 KOYLTON TWP, Tuscola, MI
Built 1980 Load: 23.3 t ADT: 800
HURDS CORNER ROAD
FairOver: SUCKER CREEK DRAIN
SEC 27-28 WELLS TWP, Tuscola, MI
Built 1960 Load: 23.7 t ADT: 1,375
MERRY ROAD
FairOver: ALLEN EXTN DRAIN
SEC 15 FAIRGROVE TWP, Tuscola, MI
Built 1979 Load: 24.3 t ADT: 330
BARNES ROAD (MID)
FairOver: PERRY CREEK
SEC 18-19 MILLINGTON TWP, Tuscola, MI
Built 1963 Load: 24.6 t ADT: 945
AKRON ROAD
FairOver: NORTHWEST DRAIN OUTLET 3
SEC 1 GILFORD TWP, Tuscola, MI
Built 1962 Load: 24.9 t ADT: 500
DARBEE ROAD
FairOver: VCCM&S DRAIN
SEC 8-17 GILFORD TWP, Tuscola, MI
Built 1962 Load: 24.9 t ADT: 174
QUANICASSEE ROAD
FairOver: NORTHWEST DRAIN OUTLET 1
SEC 8-9 GILFORD TWP, Tuscola, MI
Built 1980 Load: 25.1 t ADT: 125
BROWN ROAD
FairOver: DONIGAN DRAIN
SEC 29-32 VASSAR TWP, Tuscola, MI
Built 1963 Load: 25.3 t ADT: 1,520
BARNES ROAD (EAST)
FairOver: PERRY CREEK
SEC 18-19 MILLINGTON TWP, Tuscola, MI
Built 1965 Load: 26.1 t ADT: 945
LOREN ROAD
FairOver: MILLINGTON CREEK
SEC 27 TUSCOLA TWP, Tuscola, MI
Built 1979 Load: 26.2 t ADT: 190
THOMAS ROAD
FairOver: SELLARS DRAIN
SEC 20-21 AKRON TWP, Tuscola, MI
Built 1960 Load: 26.3 t ADT: 300
RILEY ROAD
FairOver: SUCKER CREEK
SEC 8-17 WELLS TWP, Tuscola, MI
Built 1973 Load: 26.9 t ADT: 520
CARSON ROAD
FairOver: NORTHWEST DRAIN OUTLET 3
SEC 11-14 WISNER TWP, Tuscola, MI
Built 1967 Load: 26.9 t ADT: 75
BLACKMORE ROAD
FairOver: EVERGREEN CREEK
SEC 17 FREMONT TWP, Tuscola, MI
Built 1982 Load: 27.2 t ADT: 380
GILFORD ROAD
FairOver: SOUTH BR WHITE CREEK
SEC 36 ELLINGTON TWP, Tuscola, MI
Built 1979 Load: 27.5 t ADT: 165
MURPHY LAKE ROAD
FairOver: PERRY CREEK
SEC 2-11 ARBELA TWP, Tuscola, MI
Built 1974 Load: 27.6 t ADT: 90
FOSTORIA ROAD
FairOver: FOSTORIA I/C DRAIN
SEC 35-36 WATERTOWN TWP, Tuscola, MI
Built 1987 Load: 27.9 t ADT: 2,080
ACKERMAN ROAD
FairOver: STATE I/C DRAIN EXTN
SEC 11-14 COLUMBIA TWP, Tuscola, MI
Built 1972 Load: 27.9 t ADT: 30
HOPPE ROAD
FairOver: COLUMBIAN DRAIN
SEC 14-23 COLUMBIA TWP, Tuscola, MI
Built 1967 Load: 28.2 t ADT: 185
MURRAY ROAD
FairOver: WHITE CREEK
SEC 28-29 ELLINGTON TWP, Tuscola, MI
Built 1979 Load: 28.8 t ADT: 320
HARRIS ROAD
FairOver: MURDICK-VANSICKLAND DRN
SEC 22-27 KOYLTON TWP, Tuscola, MI
Built 1991 Load: 28.8 t ADT: 60
DON ROAD
FairOver: GIBSON DRAIN
SEC 6 GILFORD TWP, Tuscola, MI
Built 1965 Load: 29.2 t ADT: 76
AUSTIN ROAD
FairOver: BELGIAN DRAIN
SEC 29 AKRON TWP, Tuscola, MI
Built 1962 Load: 30.1 t ADT: 65
BUELL ROAD
FairOver: PERRY CREEK
SEC 2-3 ARBELA TWP, Tuscola, MI
Built 1967 Load: 30.1 t ADT: 80
RINGLE ROAD
FairOver: ALLEN EXTN DRAIN
SEC 3-4 FAIRGROVE TWP, Tuscola, MI
Built 1965 Load: 30.1 t ADT: 390
BOY SCOUT ROAD
FairOver: SUCKER CREEK
SEC 2 INDIANFIELDS TWP, Tuscola, MI
Built 1935 Load: 30.1 t ADT: 335
ROSSMAN ROAD
FairOver: WHITE CREEK DRAIN #2
SEC 27-34 KINGSTON TWP, Tuscola, MI
Built 1983 Load: 30.1 t ADT: 110
M-46
FairOver: SUCKER CREEK
6.9 MI E OF M-24, Tuscola, MI
Built 1967 Load: 30.8 t ADT: 3,520
DECKERVILLE ROAD
FairOver: NORTHWEST DRAIN
SEC 24-25 GILFORD TWP, Tuscola, MI
Built 1983 Load: 30.8 t ADT: 105
LOOMIS ROAD
FairOver: WALKER-HAYES DRAIN
SEC 28-33 AKRON TWP, Tuscola, MI
Built 1958 Load: 31.1 t ADT: 550
ORMES ROAD
FairOver: PERRY CREEK
SEC 28-33 TUSCOLA TWP, Tuscola, MI
Built 1982 Load: 31.2 t ADT: 2,800
SHABBONA ROAD
FairOver: WHITE CREEK I/C DRAIN
SEC 24-25 NOVESTA TWP, Tuscola, MI
Built 1968 Load: 31.4 t ADT: 350
BARNES ROAD (WEST)
FairOver: PERRY CREEK
SEC 18-19 MILLINGTON TWP, Tuscola, MI
Built 1978 Load: 31.8 t ADT: 945
ELMWOOD ROAD
FairOver: STATE & COLLING I/C DRN
SEC 3 ALMER TWP, Tuscola, MI
Built 2001 Load: 32.0 t ADT: 100
SLACK ROAD
FairOver: BR. #1 NORTHWEST DRAIN
VILLAGE OF FAIRGROVE, Tuscola, MI
Built 1965 Load: 32.1 t ADT: 200
SWAFFER ROAD
FairOver: PERRY CREEK
SEC 33 TUSCOLA TWP, Tuscola, MI
Built 1974 Load: 32.2 t ADT: 170
FOREST ROAD
FairOver: WISCOGGIN DRAIN
SEC 26 AKRON TWP, Tuscola, MI
Built 1959 Load: 32.3 t ADT: 908
HURDS CORNER ROAD
FairOver: CASS RIVER
SEC 15-16 ELLINGTON TWP, Tuscola, MI
Built 1978 Load: 32.3 t ADT: 544
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.