Total bridges
632
Public highway bridges in Montgomery County
County profile · official public datasets
Montgomery County, OH
632 public highway bridges tracked in the FHWA National Bridge Inventory: 67.2% rated Good, 30.1% Fair, 2.7% Poor.
- 632
- Public bridges
- 67.2%
- Good condition
- 2.7%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Montgomery County posts a better-than-median Poor-condition share among rated counties in the state across large county bridge inventory.
- Top 36%
- lowest Poor share in state
- 2.7%
- Poor-condition share
- 632
- public highway bridges
- 1981
- 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.
Montgomery County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Montgomery County ranks #32 of 88 Ohio counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2.7%). Montgomery County, Ohio contains 632 public highway bridges. Roughly 67.2% are rated “Good,” 30.1% “Fair,” and 2.7% “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
67.2%
425 of 632 rated 7-9
Fair condition
30.1%
190 of 632 rated 5-6
Poor condition
2.7%
17 of 632 rated 4 or below
In-state Poor-share rank
#32 of 88
Among Ohio counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 632 NBI-tracked bridges by lowest applicable component rating.
Good 67.2% (425)
Fair 30.1% (190)
Poor 2.7% (17)
Montgomery County's Poor-condition bridges carry 78,946 vehicle crossings a day
That is 0.7% of the county's reported daily bridge traffic on 2.7% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 4,644 crossings a day against 19,500 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 632 of 632 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
41.8% of Montgomery County's bridges have passed the 50-year mark
264 of the 632 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 67.2% 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 34.2% of the county's Poor-condition bridge traffic
Shoup Mill Rd. over storm sewer, built 1968, carries 26,981 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 17-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 78,946 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Montgomery County's bridges were built
632 bridges with a recorded construction year, grouped by decade
- 1900s 7
1900–1909
7 bridges
- 1910s 3
1910–1919
3 bridges
- 1920s 2
1920–1929
2 bridges
- 1930s 7
1930–1939
7 bridges
- 1940s 7
1940–1949
7 bridges
- 1950s 48
1950–1959
48 bridges
- 1960s
1960–1969
144 bridges
- 1970s
1970–1979
65 bridges
- 1980s
1980–1989
127 bridges
- 1990s
1990–1999
84 bridges
- 2000s
2000–2009
76 bridges
- 2010s 55
2010–2019
55 bridges
- 2020s 7
2020–2029
7 bridges
What this shows Construction peaked in the 1960s, when 144 of the county's bridges still in the inventory were built, which is 22.8% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1981) matches the Ohio average (1977).
How Montgomery County compares with Ohio's closest counties by inventory size
The 5 Ohio counties nearest Montgomery County in number of bridges, with their condition splits. Its 2.7% Poor share is the 3rd-lowest of these 6. Its average build year of 1981 against a peer-group mean of 1979 is in line with the group.
Showing the 5 closest of 87 Ohio counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Hamilton County | 783 | 57.5% | 39.6% | 2.9% | 1970 |
| Montgomery County (this page) | 632 | 67.2% | 30.1% | 2.7% | 1981 |
| Summit County | 563 | 55.4% | 42.3% | 2.3% | 1974 |
| Wood County | 508 | 64.2% | 31.5% | 4.3% | 1980 |
| Darke County | 463 | 82.9% | 16.6% | 0.4% | 1985 |
| Licking County | 439 | 57.2% | 35.1% | 7.7% | 1988 |
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 Montgomery 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 Montgomery County, both outside Ohio so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside OH (632 bridges here).
- Greenville County, SC · 635 bridges
- Steuben County, NY · 627 bridges
- Spartanburg County, SC · 638 bridges
- McLean County, IL · 624 bridges
Similar average build year
Nearest mean year-built outside OH (1981 here).
- Shawnee County, KS · avg 1981 · 563 bridges
- Pottawattamie County, IA · avg 1981 · 557 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Poor-condition bridges (17)
E PARK DRIVE WDRIV
PoorOver: STREAM
E PARK DR AT SHILOH DR, Montgomery, OH
Built 1900 Load: 0.0 t ADT: 5
Huffman Road T0042
PoorOver: Bear Creek
.4 MI E DIAMOND MILL ROAD, Montgomery, OH
Built 1969 Load: 4.9 t ADT: 285
RENFIELD DRIVE
PoorOver: STREAM
0.2 MI EAST OF OH-201, Montgomery, OH
Built 1976 Load: 10.4 t ADT: 135
ELBEE ROAD
PoorOver: STREAM
.35 MI S OF DOROTHY LN, Montgomery, OH
Built 1930 Load: 12.6 t ADT: 2,096
DANUBE COURT
PoorOver: BR OF LITTLE BEAVER CREE
400 FT EAST OF WOODMAN DR, Montgomery, OH
Built 1974 Load: 16.2 t ADT: 200
Preble Co Line C23
PoorOver: Twin Creek
1.9 MILES NORTH OF SR725, Montgomery, OH
Built 1962 Load: 25.9 t ADT: 979
S CASSEL ROAD
PoorOver: POPLAR CREEK
.6 MI N OF LITTLE YORK RD, Montgomery, OH
Built 1915 Load: 26.9 t ADT: 452
Forney Road T0042
PoorOver: Little Bear Creek
.25 MI W OF S SNYDER RD, Montgomery, OH
Built 1992 Load: 29.2 t ADT: 60
Shank Road T0044
PoorOver: Opossum Creek
.6 MILE EAST OF SR 4, Montgomery, OH
Built 1964 Load: 30.5 t ADT: 561
SEYBOLD RD M0019
PoorOver: Poplar Run
0.6 MI N OF WOLF CREEK PK, Montgomery, OH
Built 1900 Load: 32.7 t ADT: 120
Diamond Mill C217
PoorOver: Bear Creek
.5 MILE SOUTH OF SR35, Montgomery, OH
Built 1957 Load: 34.3 t ADT: 2,651
Amity Road T0056
PoorOver: Toms Run
750 FT W OF CRAWFORD RD, Montgomery, OH
Built 1964 Load: 35.6 t ADT: 341
Wenger Road M020B
PoorOver: Moss Creek
.5 MI. WEST OF UNION RD., Montgomery, OH
Built 1988 Load: 36.6 t ADT: 11,575
SR 4
PoorOver: WEBSTER
0.2 MI E OF I75, Montgomery, OH
Built 1961 Load: 42.1 t ADT: 15,097
WEST AVENUE
PoorOver: BR OF LITTLE BEAVER CK
600 FT N OF ANSEL DR, Montgomery, OH
Built 1980 Load: 42.1 t ADT: 250
Alex Bell C0078
PoorOver: Drainage Ditch
400 FEET EAST OF SR 741, Montgomery, OH
Built 1968 Load: 74.5 t ADT: 17,158
Shoup Mill Rd.
PoorOver: storm sewer
100 East of SR48, Montgomery, OH
Built 1968 Load: 77.8 t ADT: 26,981
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.