Total bridges
104
Public highway bridges in Gogebic County
County profile · official public datasets
Gogebic County, MI
104 public highway bridges tracked in the FHWA National Bridge Inventory: 23.1% rated Good, 59.6% Fair, 17.3% Poor.
- 104
- Public bridges
- 23.1%
- Good condition
- 17.3%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Gogebic 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.
- 69th
- of 83 on Poor share
- 17.3%
- Poor-condition share
- 104
- public highway bridges
- 1969
- 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.
Gogebic County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Gogebic County ranks #69 of 83 Michigan counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 17.3%). Gogebic County, Michigan contains 104 public highway bridges. Roughly 23.1% are rated “Good,” 59.6% “Fair,” and 17.3% “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
23.1%
24 of 104 rated 7-9
Fair condition
59.6%
62 of 104 rated 5-6
Poor condition
17.3%
18 of 104 rated 4 or below
In-state Poor-share rank
#69 of 83
Among Michigan counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 104 NBI-tracked bridges by lowest applicable component rating.
Good 23.1% (24)
Fair 59.6% (62)
Poor 17.3% (18)
Gogebic County's Poor-condition bridges carry 10,533 vehicle crossings a day
That is 11.6% of the county's reported daily bridge traffic on 17.3% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 585 crossings a day against 376 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 104 of 104 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
53.8% of Gogebic County's bridges have passed the 50-year mark
56 of the 104 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 23.1% 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 80.5% of the county's Poor-condition bridge traffic
US-2 over POWDER MILL CREEK, built 1962, carries 8,481 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 18-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 10,533 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Gogebic County's bridges were built
104 bridges with a recorded construction year, grouped by decade
- 1900s 1
1900–1909
1 bridges
- 1910s 1
1910–1919
1 bridges
- 1920s
1920–1929
11 bridges
- 1930s
1930–1939
11 bridges
- 1940s
1940–1949
8 bridges
- 1950s
1950–1959
9 bridges
- 1960s
1960–1969
13 bridges
- 1970s 4
1970–1979
4 bridges
- 1980s
1980–1989
13 bridges
- 1990s
1990–1999
13 bridges
- 2000s
2000–2009
13 bridges
- 2010s 4
2010–2019
4 bridges
- 2020s 3
2020–2029
3 bridges
What this shows Construction peaked in the 1960s, when 13 of the county's bridges still in the inventory were built, which is 12.5% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1969, 7 years older than the Michigan average of 1976.
How Gogebic County compares with Michigan's closest counties by inventory size
The 5 Michigan counties nearest Gogebic County in number of bridges, with their condition splits. Its 17.3% Poor share is the 6th-lowest of these 6. Its average build year of 1969 against a peer-group mean of 1978 is 9 years older.
Showing the 5 closest of 82 Michigan counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Chippewa County | 112 | 22.3% | 65.2% | 12.5% | 1974 |
| Hillsdale County | 105 | 24.8% | 58.1% | 17.1% | 1973 |
| Gogebic County (this page) | 104 | 23.1% | 59.6% | 17.3% | 1969 |
| Osceola County | 103 | 38.8% | 54.4% | 6.8% | 1983 |
| Oceana County | 100 | 31% | 64% | 5% | 1977 |
| Clare County | 96 | 38.5% | 58.3% | 3.1% | 1984 |
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 Gogebic 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 Gogebic County, both outside Michigan so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside MI (104 bridges here).
- Nassau County, FL · 104 bridges
- Brooks County, GA · 104 bridges
- Grady County, GA · 104 bridges
- Bonner County, ID · 104 bridges
Similar average build year
Nearest mean year-built outside MI (1969 here).
- Cook County, IL · avg 1969 · 1,721 bridges
- Fresno County, CA · avg 1969 · 916 bridges
- Cuyahoga County, OH · avg 1969 · 871 bridges
- Ventura County, CA · avg 1969 · 501 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Poor-condition bridges (18)
COPPS MINE ROAD
PoorOver: PRESQUE ISLE RIVER
SEC 28 MARENISCO TWP, Gogebic, MI
Built 1906 Load: 0.0 t ADT: 10
MILLER ROAD
PoorOver: CISCO BR ONTONAGON RIVER
SEC 15 WATERSMEET TWP, Gogebic, MI
Built 1920 Load: 3.9 t ADT: 11
CROZER STREET
PoorOver: MIDDLE BR ONTONAGON RIV
VILLAGE OF WATERSMEET, Gogebic, MI
Built 1919 Load: 6.5 t ADT: 395
OLD US-2
PoorOver: CISCO BR ONTONAGON RIVER
SEC 15 WATERSMEET TWP, Gogebic, MI
Built 1927 Load: 14.9 t ADT: 48
OLD COUNTY ROAD
PoorOver: BLACK RIVER
SEC 13 BESSEMER TWP, Gogebic, MI
Built 1922 Load: 16.4 t ADT: 391
BUCK LAKE ROAD
PoorOver: MIDDLE BR ONTONAGON RIV
SEC 13 WATERSMEET TWP, Gogebic, MI
Built 1957 Load: 16.4 t ADT: 28
PLANTER ROAD
PoorOver: JACKSON CREEK
SEC 31 WAKEFIELD TWP, Gogebic, MI
Built 1923 Load: 19.8 t ADT: 34
OLD US-2
PoorOver: TENDERFOOT CREEK
SEC 31 MARENISCO TWP, Gogebic, MI
Built 1927 Load: 20.7 t ADT: 7
ELM LANE
PoorOver: BLACK RIVER
SEC 34 BESSEMER TWP, Gogebic, MI
Built 1940 Load: 27.5 t ADT: 10
OLD US-2
PoorOver: GROSBECK CREEK
SEC 32 MARENISCO TWP, Gogebic, MI
Built 1927 Load: 30.8 t ADT: 7
CHANEY LAKE ROAD
PoorOver: LITTLE BLACK RIVER
SEC 21 WAKEFIELD TWP, Gogebic, MI
Built 1934 Load: 32.7 t ADT: 329
OLD US-2
PoorOver: MIDDLE BR ONTONAGON RIV
SEC 21 WATERSMEET TWP, Gogebic, MI
Built 1927 Load: 35.9 t ADT: 13
VANDERHAGEN ROAD
PoorOver: WELCH CREEK
SEC 3-4 IRONWOOD TWP, Gogebic, MI
Built 1968 Load: 39.2 t ADT: 182
VANDERHAGEN ROAD
PoorOver: WELCH CREEK
SEC 3-4 IRONWOOD TWP, Gogebic, MI
Built 1968 Load: 39.2 t ADT: 182
US-2
PoorOver: POWDER MILL CREEK
W LTS OF BESSEMER, Gogebic, MI
Built 1962 Load: 43.1 t ADT: 8,481
BLACK RIVER ROAD
PoorOver: POWDERMILL CREEK
SEC 33 IRONWOOD TWP, Gogebic, MI
Built 2001 Load: 47.2 t ADT: 400
FIRE TOWER ROAD
PoorOver: MIDDLE BR ONTONAGON RIV
SEC 27 WATERSMEET TWP, Gogebic, MI
Built 1970 Load: 57.7 t ADT: 2
KETOLA GRADE ROAD
PoorOver: BLACK RIVER
SEC 33-34 ERWIN TWP, Gogebic, MI
Built 1994 Load: 66.7 t ADT: 3
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.