Total bridges
37
Public highway bridges in Dickinson County
County profile · official public datasets
Dickinson County, MI
37 public highway bridges tracked in the FHWA National Bridge Inventory: 43.2% rated Good, 40.5% Fair, 16.2% Poor.
- 37
- Public bridges
- 43.2%
- Good condition
- 16.2%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Dickinson County pairs a higher-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.
- 62nd
- of 83 on Poor share
- 16.2%
- Poor-condition share
- 37
- public highway bridges
- 1971
- 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.
Dickinson County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Dickinson County ranks #62 of 83 Michigan counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 16.2%). Dickinson County, Michigan contains 37 public highway bridges. Roughly 43.2% are rated “Good,” 40.5% “Fair,” and 16.2% “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
43.2%
16 of 37 rated 7-9
Fair condition
40.5%
15 of 37 rated 5-6
Poor condition
16.2%
6 of 37 rated 4 or below
In-state Poor-share rank
#62 of 83
Among Michigan counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 37 NBI-tracked bridges by lowest applicable component rating.
Good 43.2% (16)
Fair 40.5% (15)
Poor 16.2% (6)
Dickinson County's Poor-condition bridges carry 6,847 vehicle crossings a day
That is 12.9% of the county's reported daily bridge traffic on 16.2% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,141 crossings a day against 1,024 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 37 of 37 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
51.4% of Dickinson County's bridges have passed the 50-year mark
19 of the 37 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 43.2% 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 44.6% of the county's Poor-condition bridge traffic
M-95 over FORD RIVER, built 1928, carries 3,051 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 6-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 6,847 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Dickinson County's bridges were built
37 bridges with a recorded construction year, grouped by decade
- 1910s 1
1910–1919
1 bridges
- 1920s
1920–1929
5 bridges
- 1930s
1930–1939
3 bridges
- 1940s
1940–1949
3 bridges
- 1950s
1950–1959
2 bridges
- 1960s
1960–1969
3 bridges
- 1970s
1970–1979
2 bridges
- 1980s
1980–1989
5 bridges
- 1990s
1990–1999
5 bridges
- 2000s
2000–2009
5 bridges
- 2010s
2010–2019
2 bridges
- 2020s 1
2020–2029
1 bridges
What this shows Construction peaked in the 1920s, when 5 of the county's bridges still in the inventory were built, which is 13.5% of those with a recorded year. That cohort is now 95 to 104 years old in the 2024 inventory. Its average build year is 1971, 5 years older than the Michigan average of 1976.
How Dickinson County compares with Michigan's closest counties by inventory size
The 5 Michigan counties nearest Dickinson County in number of bridges, with their condition splits. Its 16.2% Poor share is the 6th-lowest of these 6. Its average build year of 1971 against a peer-group mean of 1978 is 7 years older.
Showing the 5 closest of 82 Michigan counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Missaukee County | 39 | 48.7% | 38.5% | 12.8% | 1979 |
| Emmet County | 37 | 67.6% | 32.4% | 0% | 1988 |
| Presque Isle County | 37 | 43.2% | 45.9% | 10.8% | 1972 |
| Dickinson County (this page) | 37 | 43.2% | 40.5% | 16.2% | 1971 |
| Manistee County | 35 | 40% | 45.7% | 14.3% | 1979 |
| Grand Traverse County | 33 | 51.5% | 42.4% | 6.1% | 1971 |
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 Dickinson 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 Dickinson County, both outside Michigan so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside MI (37 bridges here).
- Sitka City and County, AK · 37 bridges
- Suwannee County, FL · 37 bridges
- Teton County, ID · 37 bridges
- Isanti County, MN · 37 bridges
Similar average build year
Nearest mean year-built outside MI (1971 here).
- Baltimore County, MD · avg 1971 · 783 bridges
- Washington County, PA · avg 1971 · 655 bridges
- Linn County, OR · avg 1971 · 566 bridges
- Monmouth County, NJ · avg 1971 · 505 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (37)
M-95
FairOver: MENOMINEE RIVER
1.7 MI S OF KINGSFORD, Dickinson, MI
Built 1973 Load: 29.5 t ADT: 5,620
RIDEOUT ROAD
FairOver: E BR STURGEON RIVER
1 MI W OF HARDWOOD, Dickinson, MI
Built 1945 Load: 29.8 t ADT: 135
M-95
FairOver: W BR STURGEON RIVER
6.8 MI S OF M-69, Dickinson, MI
Built 1935 Load: 31.8 t ADT: 3,033
US-8
FairOver: MENOMINEE RIVER
2.0 MI S OF NORWAY, Dickinson, MI
Built 1966 Load: 32.1 t ADT: 2,875
COUNTY HWY 569
FairOver: STURGEON RIVER
9 MI N OF WAUCEDAH, Dickinson, MI
Built 1923 Load: 32.7 t ADT: 327
COUNTY HWY 581
FairOver: FORD RIVER
IN RALPH, Dickinson, MI
Built 1927 Load: 32.7 t ADT: 250
COUNTY HWY 573
FairOver: STURGEON RIVER
0.5 MI N OF LORETTO, Dickinson, MI
Built 1945 Load: 33.4 t ADT: 2,000
GROVELAND MINE RD
FairOver: W BR STURGEON RIVER
7 MI W & 2 MI N OF FELCH, Dickinson, MI
Built 1991 Load: 34.0 t ADT: 126
COUNTY HWY 426
FairOver: FORD RIVER
IN ALFRED, Dickinson, MI
Built 1928 Load: 34.3 t ADT: 150
NEWBURG ROAD
FairOver: MICHIGAMME RIVER
3 MI W OF FLOODWOOD, Dickinson, MI
Built 1989 Load: 34.7 t ADT: 100
US-2 US-141
FairOver: MENOMINEE RIVER
4.5 MI NW IRON MOUNTAIN, Dickinson, MI
Built 1981 Load: 35.0 t ADT: 6,759
M-69 (CO HWY 569)
FairOver: E BR STURGEON RIVER
2 MI E OF FOSTER CITY, Dickinson, MI
Built 1931 Load: 35.3 t ADT: 553
COUNTY HWY 577
FairOver: STURGEON RIVER
APPROX 2 MI S OF VULCAN, Dickinson, MI
Built 1969 Load: 39.5 t ADT: 761
DISTRICT 5 ROAD
FairOver: PINE CREEK
3 MI N OF NORWAY, Dickinson, MI
Built 2003 Load: 42.1 t ADT: 199
US-2 US-141
FairOver: E&LS RR
0.8 MI E OF WISC ST LINE, Dickinson, MI
Built 1932 Load: 52.5 t ADT: 6,759
WELLS GRADE RD
GoodOver: E BR STURGEON RIVER
FELCH TWP SEC 35, Dickinson, MI
Built 2019 Load: 28.5 t ADT: 5
CAZZOLLA ROAD
GoodOver: STURGEON RIVER
6 MI S OF FOSTER CITY, Dickinson, MI
Built 2009 Load: 30.8 t ADT: 10
US-2
GoodOver: STURGEON RIVER
1.0 MI W OF LORETTO, Dickinson, MI
Built 2003 Load: 32.7 t ADT: 5,743
COUNTY HWY 581
GoodOver: E BR STURGEON RIVER
2 MI N OF FELCH, Dickinson, MI
Built 1927 Load: 32.7 t ADT: 406
CAMP NO 3 ROAD
GoodOver: E BR STURGEON RIVER
2.5 MI N OF HARDWOOD, Dickinson, MI
Built 1988 Load: 32.7 t ADT: 44
DNR TRAIL
GoodOver: BLACK CREEK
WAUCEDAH TWP SEC 12, Dickinson, MI
Built 2023 Load: 35.3 t ADT: 199
BYERS ROAD
GoodOver: FORD RIVER
3 MI N OF SAGOLA, Dickinson, MI
Built 1992 Load: 38.6 t ADT: 175
CAMP 9 ROAD
GoodOver: FORD RIVER
0.25 MI S OF ALFRED, Dickinson, MI
Built 1988 Load: 38.9 t ADT: 18
COUNTY ROAD NO 3
GoodOver: W BR ESCANABA RIVER
6 MI N & 2 MI E OF RALPH, Dickinson, MI
Built 1994 Load: 39.2 t ADT: 50
CHEESE FACTORY RD
GoodOver: E BR STURGEON RIVER
IN FOSTER CITY, Dickinson, MI
Built 1992 Load: 40.8 t ADT: 15
M-69
GoodOver: N BR STURGEON RIVER
1.5 MI EAST OF M-95, Dickinson, MI
Built 1956 Load: 41.1 t ADT: 1,500
COUNTY ROAD NO 3
GoodOver: W BR ESCANABA RIVER
6 MI N & 7 MI E OF RALPH, Dickinson, MI
Built 1989 Load: 41.1 t ADT: 50
SWARTZ CREEK ROAD
GoodOver: MCGREGAR CREEK
6 MI N AND 1 E OF RALPH, Dickinson, MI
Built 1992 Load: 41.8 t ADT: 10
US-141
GoodOver: MENOMINEE RIVER
AT WISCONSIN STATE LINE, Dickinson, MI
Built 2011 Load: 43.1 t ADT: 8,000
COUNTY ROAD NO 5
GoodOver: W BR STURGEON RIVER
9 MI E & 3 MI N MERRIMAN, Dickinson, MI
Built 2009 Load: 43.7 t ADT: 20
GROVELAND MINE RD
GoodOver: W BR STURGEON RIVER
FELCH TWP SEC 35, Dickinson, MI
Built 1970 Load: 97.2 t ADT: 138
DEGROOT RD
PoorOver: N BR FORD RIVER
0.5 MI N OF TURNER RD, Dickinson, MI
Built 2008 Load: 8.2 t ADT: 10
WALKER ROAD
PoorOver: N BRANCH OF FORD RIVER
0.5 MI E OF ALFRED, Dickinson, MI
Built 1957 Load: 16.2 t ADT: 10
COUNTY HWY 569
PoorOver: E BR STURGEON RIVER
FOSTER CITY, Dickinson, MI
Built 1945 Load: 21.7 t ADT: 453
COUNTY HWY 569
PoorOver: STURGEON RIVER
4 MI S OF FOSTER CITY, Dickinson, MI
Built 1912 Load: 30.4 t ADT: 290
M-95
PoorOver: FORD RIVER
1.4 MI S OF CHANNING, Dickinson, MI
Built 1928 Load: 31.4 t ADT: 3,051
M-95
PoorOver: PRIVATE RR (ABN)
7.9 MI S OF M-69, Dickinson, MI
Built 1968 Load: 47.6 t ADT: 3,033
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.