Total bridges
139
Public highway bridges in Midland County
County profile · official public datasets
Midland County, MI
139 public highway bridges tracked in the FHWA National Bridge Inventory: 26.6% rated Good, 56.1% Fair, 17.3% Poor.
- 139
- Public bridges
- 26.6%
- Good condition
- 17.3%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Midland County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- 68th
- of 83 on Poor share
- 17.3%
- Poor-condition share
- 139
- public highway bridges
- 1978
- 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.
Midland County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Midland County ranks #68 of 83 Michigan counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 17.3%). Midland County, Michigan contains 139 public highway bridges. Roughly 26.6% are rated “Good,” 56.1% “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
26.6%
37 of 139 rated 7-9
Fair condition
56.1%
78 of 139 rated 5-6
Poor condition
17.3%
24 of 139 rated 4 or below
In-state Poor-share rank
#68 of 83
Among Michigan counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 139 NBI-tracked bridges by lowest applicable component rating.
Good 26.6% (37)
Fair 56.1% (78)
Poor 17.3% (24)
Midland County's Poor-condition bridges carry 42,131 vehicle crossings a day
That is 8.9% 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 1,755 crossings a day against 3,056 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 139 of 139 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
45.3% of Midland County's bridges have passed the 50-year mark
63 of the 139 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 26.6% 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 16.1% of the county's Poor-condition bridge traffic
M-30 over US-10, built 1961, carries 6,769 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 24-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 42,131 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Midland County's bridges were built
139 bridges with a recorded construction year, grouped by decade
- 1900s 2
1900–1909
2 bridges
- 1910s 2
1910–1919
2 bridges
- 1920s 4
1920–1929
4 bridges
- 1930s 12
1930–1939
12 bridges
- 1940s 4
1940–1949
4 bridges
- 1950s 2
1950–1959
2 bridges
- 1960s
1960–1969
31 bridges
- 1970s
1970–1979
13 bridges
- 1980s
1980–1989
13 bridges
- 1990s 10
1990–1999
10 bridges
- 2000s
2000–2009
22 bridges
- 2010s
2010–2019
18 bridges
- 2020s 6
2020–2029
6 bridges
What this shows Construction peaked in the 1960s, when 31 of the county's bridges still in the inventory were built, which is 22.3% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1978) matches the Michigan average (1976).
How Midland County compares with Michigan's closest counties by inventory size
The 5 Michigan counties nearest Midland 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 1978 against a peer-group mean of 1976 is in line with the group.
Showing the 5 closest of 82 Michigan counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Kalamazoo County | 151 | 41.1% | 52.3% | 6.6% | 1984 |
| Marquette County | 147 | 47.6% | 38.8% | 13.6% | 1972 |
| Muskegon County | 144 | 20.1% | 67.4% | 12.5% | 1968 |
| Midland County (this page) | 139 | 26.6% | 56.1% | 17.3% | 1978 |
| St. Joseph County | 132 | 28.8% | 59.1% | 12.1% | 1979 |
| Van Buren County | 129 | 32.6% | 60.5% | 7% | 1976 |
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 Midland 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 Midland County, both outside Michigan so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside MI (139 bridges here).
- Bulloch County, GA · 139 bridges
- St. Helena County, LA · 139 bridges
- Garrett County, MD · 139 bridges
- Leflore County, MS · 139 bridges
Similar average build year
Nearest mean year-built outside MI (1978 here).
- Orange County, CA · avg 1978 · 1,164 bridges
- Sumner County, KS · avg 1978 · 659 bridges
- Allen County, IN · avg 1978 · 613 bridges
- Livingston County, IL · avg 1978 · 579 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Good-condition bridges (37)
POSEYVILLE ROAD
GoodOver: BULLOCK CREEK
0.3 MI N OF STEWART ROAD, Midland, MI
Built 2007 Load: 28.8 t ADT: 8,442
M-30 (MERIDIAN RD)
GoodOver: BULLOCK CREEK
0.1 MI S OF KENT RD, Midland, MI
Built 2020 Load: 29.8 t ADT: 5,390
M-20 WB
GoodOver: TITTABAWASSEE RIVER
IN MIDLAND, Midland, MI
Built 2018 Load: 33.4 t ADT: 21,350
M-20 EB
GoodOver: TITTABAWASSEE RIVER
IN MIDLAND, Midland, MI
Built 2019 Load: 34.3 t ADT: 21,358
GORDONVILLE ROAD
GoodOver: POTTER CREEK
250 FT E OF COUNTY LINE, Midland, MI
Built 1994 Load: 34.4 t ADT: 22
11 MILE ROAD
GoodOver: N BR CARROLL CREEK
JEROME TWP SEC 31/32, Midland, MI
Built 2019 Load: 36.0 t ADT: 250
CASTOR ROAD
GoodOver: LITTLE SALT CREEK
0.5 MI N OF BRADFORD RD, Midland, MI
Built 2007 Load: 37.9 t ADT: 96
M-18
GoodOver: BLUFF CREEK
0.8 MI N OF US-10, Midland, MI
Built 2001 Load: 38.2 t ADT: 4,766
REDSTONE ROAD
GoodOver: BUSH CREEK
0.45 MI W OF CASTOR ROAD, Midland, MI
Built 2020 Load: 38.6 t ADT: 3,328
7 MILE ROAD
GoodOver: CARROLL CREEK
1.4 KM SOUTH OF WACKERLY, Midland, MI
Built 2010 Load: 41.7 t ADT: 50
US-10 EB
GoodOver: SANFORD LAKE
0.2 MI NW OF M-30, Midland, MI
Built 2008 Load: 41.8 t ADT: 7,893
M-30 MERIDIAN RD
GoodOver: CARROLL CREEK
0.8 MI S OF WACKERLY RD, Midland, MI
Built 2006 Load: 42.4 t ADT: 4,200
HOMER ROAD
GoodOver: CARROLL CREEK
0.4 MI N OF OLSON ROAD, Midland, MI
Built 2009 Load: 43.8 t ADT: 585
SEVEN MILE ROAD
GoodOver: BULLOCK CREEK
0.2 MI N OF LAPORTE RD, Midland, MI
Built 2019 Load: 44.4 t ADT: 437
STARK ROAD
GoodOver: STURGEON CREEK
0.3 MI N OF SIEBERT ROAD, Midland, MI
Built 2014 Load: 48.6 t ADT: 1,278
BAKER ROAD
GoodOver: HIGH DRAIN
WARREN TWP SEC 16/21, Midland, MI
Built 2023 Load: 49.2 t ADT: 50
SMITHS CROSSING RD
GoodOver: FLEMMING DRAIN
200 FT N OF HUEY RD, Midland, MI
Built 2007 Load: 49.4 t ADT: 1,901
M-30
GoodOver: PERE MARQ RAIL TRAIL
0.1 MI S OF SAGINAW RD, Midland, MI
Built 2008 Load: 50.2 t ADT: 4,200
MONROE ROAD
GoodOver: NEWELL DRAIN
LARKIN TWP SEC 20/29, Midland, MI
Built 2020 Load: 50.2 t ADT: 2,317
BRADFORD ROAD
GoodOver: SALT RIVER
0.6 MI W OF COLEMAN RD, Midland, MI
Built 1986 Load: 50.9 t ADT: 188
GENEVA ROAD
GoodOver: CHIPPEWA RIVER
0.85 MI S OF M-20, Midland, MI
Built 2000 Load: 51.2 t ADT: 231
W ST ANDREWS ROAD
GoodOver: SNAKE CREEK
IN CITY OF MIDLAND, Midland, MI
Built 2016 Load: 51.8 t ADT: 4,000
COLEMAN ROAD
GoodOver: CHIPPEWA RIVER
0.1 MI S OF SCHOOL RD (E), Midland, MI
Built 2021 Load: 52.2 t ADT: 2,114
9 MILE ROAD
GoodOver: S BR CARROLL CREEK
LEE TWP SEC 3/4, Midland, MI
Built 2017 Load: 54.4 t ADT: 500
POSEYVILLE ROAD
GoodOver: JO DRAIN
INGERSOLL TWP SEC 8/9, Midland, MI
Built 2017 Load: 54.4 t ADT: 2,196
SHAFFER RD (EAST)
GoodOver: BLUFF CREEK
WARREN TWP SEC 23/26, Midland, MI
Built 2017 Load: 54.4 t ADT: 1,034
STURGEON AVENUE
GoodOver: NEWELL DRAIN
LARKIN TWP SEC 29/30, Midland, MI
Built 2019 Load: 55.1 t ADT: 3,328
ORR ROAD
GoodOver: WEEKS DRAIN
0.55 MI N TITTABAWASSEE, Midland, MI
Built 2019 Load: 56.4 t ADT: 106
KENT ROAD
GoodOver: SUCKER CREEK
0.25 MI W OF NINE MILE, Midland, MI
Built 2004 Load: 56.7 t ADT: 291
WEST RIVER ROAD
GoodOver: BLACK CREEK
JEROME TWP SEC 11, Midland, MI
Built 2016 Load: 57.3 t ADT: 350
COLEMAN ROAD
GoodOver: BIG SALT RIVER
0.4 MI N OF MACNELLY, Midland, MI
Built 2015 Load: 59.9 t ADT: 2,113
PATTERSON ROAD
GoodOver: BULLOCK CREEK
28 FT S OF MILLER RD., Midland, MI
Built 2006 Load: 64.6 t ADT: 705
M-30 MERIDIAN RD
GoodOver: TITTABAWASSEE RIVER
0.2 MI S OF SAGINAW RD, Midland, MI
Built 2007 Load: 67.1 t ADT: 4,200
N SAGINAW ROAD
GoodOver: BIG SALT RIVER
0.15 MI NW OF 11 MILE RD, Midland, MI
Built 2001 Load: 70.3 t ADT: 2,705
CASTOR ROAD
GoodOver: N BR CARROLL CREEK
JEROME TWP SEC 31, Midland, MI
Built 2016 Load: 72.6 t ADT: 158
NORTH JEFFERSON RD
GoodOver: HERNER DRAIN
MILLS TWP SEC 3/4, Midland, MI
Built 2016 Load: 72.6 t ADT: 283
GREY RD
GoodOver: BULLOCK CREEK
0.4 M N OF STEWART RD, Midland, MI
Built 2022 Load: 95.6 t ADT: 644
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.