Total bridges
74
Public highway bridges in Montgomery County
County profile · official public datasets
Montgomery County, KY
74 public highway bridges tracked in the FHWA National Bridge Inventory: 23% rated Good, 66.2% Fair, 10.8% Poor.
- 74
- Public bridges
- 23%
- Good condition
- 10.8%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Montgomery County posts a higher-than-median Poor-condition share among rated counties in the state across rated county bridge inventory.
- 99th
- of 120 on Poor share
- 10.8%
- Poor-condition share
- 74
- 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.
Montgomery County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Montgomery County ranks #99 of 120 Kentucky counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 10.8%). Montgomery County, Kentucky contains 74 public highway bridges. Roughly 23% are rated “Good,” 66.2% “Fair,” and 10.8% “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%
17 of 74 rated 7-9
Fair condition
66.2%
49 of 74 rated 5-6
Poor condition
10.8%
8 of 74 rated 4 or below
In-state Poor-share rank
#99 of 120
Among Kentucky counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 74 NBI-tracked bridges by lowest applicable component rating.
Good 23% (17)
Fair 66.2% (49)
Poor 10.8% (8)
Montgomery County's Poor-condition bridges carry 18,290 vehicle crossings a day
That is 8.1% of the county's reported daily bridge traffic on 10.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 2,286 crossings a day against 1,409 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 74 of 74 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
39.2% of Montgomery County's bridges have passed the 50-year mark
29 of the 74 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% 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 69.8% of the county's Poor-condition bridge traffic
I-64 over PREWITT-GRASSY LICK RD, built 1960, carries 12,764 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 8-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 18,290 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
74 bridges with a recorded construction year, grouped by decade
- 1930s 3
1930–1939
3 bridges
- 1940s 3
1940–1949
3 bridges
- 1950s
1950–1959
9 bridges
- 1960s
1960–1969
12 bridges
- 1970s
1970–1979
7 bridges
- 1980s
1980–1989
16 bridges
- 1990s
1990–1999
13 bridges
- 2000s
2000–2009
8 bridges
- 2010s 2
2010–2019
2 bridges
- 2020s 1
2020–2029
1 bridges
What this shows Construction peaked in the 1980s, when 16 of the county's bridges still in the inventory were built, which is 21.6% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1978) matches the Kentucky average (1978).
How Montgomery County compares with Kentucky's closest counties by inventory size
The 5 Kentucky counties nearest Montgomery County in number of bridges, with their condition splits. Its 10.8% Poor share is the 5th-lowest of these 6. Its average build year of 1978 against a peer-group mean of 1975 is in line with the group.
Showing the 5 closest of 119 Kentucky counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Wolfe County | 77 | 54.5% | 41.6% | 3.9% | 1979 |
| Wayne County | 76 | 22.4% | 61.8% | 15.8% | 1978 |
| McLean County | 75 | 8% | 81.3% | 10.7% | 1963 |
| Mercer County | 75 | 32% | 61.3% | 6.7% | 1982 |
| Carlisle County | 74 | 35.1% | 62.2% | 2.7% | 1973 |
| Montgomery County (this page) | 74 | 23% | 66.2% | 10.8% | 1978 |
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 Kentucky so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside KY (74 bridges here).
- Clinch County, GA · 74 bridges
- Decatur County, GA · 74 bridges
- Hart County, GA · 74 bridges
- Wright County, MN · 74 bridges
Similar average build year
Nearest mean year-built outside KY (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 (17)
STEPSTONE ROAD
GoodOver: STEPSTONE CREEK
.2MI W-STEPSTONE @BATH CL, Montgomery, KY
Built 2010 Load: 16.1 t ADT: 80
COONS FARM RD
GoodOver: SPENCER CREEK
500 FT S OF JCT KY 713, Montgomery, KY
Built 1987 Load: 16.3 t ADT: 10
DONALDSON RD
GoodOver: GRASSY LICK CREEK
.1 MI W PREWITT-GRASSY RD, Montgomery, KY
Built 1989 Load: 16.4 t ADT: 331
US 460
GoodOver: SLATE CREEK
.01 MI E of KY 1050, Montgomery, KY
Built 2019 Load: 23.3 t ADT: 5,205
RUSS WILLOUGHBY RD
GoodOver: HOG CREEK
.1 MI S. OF KY 11, Montgomery, KY
Built 1994 Load: 28.4 t ADT: 109
CAMARGO-LEVEE RD
GoodOver: BOWLING FORK
.9 MI S - US 460, Montgomery, KY
Built 1992 Load: 38.7 t ADT: 1,468
KY-1050
GoodOver: CAMP BRANCH
.60 MI S OF JCT US 460, Montgomery, KY
Built 1950 Load: 39.9 t ADT: 840
KY-3363
GoodOver: HOGG CREEK
0.4 MI N JCT KY 11, Montgomery, KY
Built 1989 Load: 39.9 t ADT: 457
US 460
GoodOver: BRUSH CREEK
5.2 MI E. JCT KY 686, Montgomery, KY
Built 2004 Load: 46.5 t ADT: 9,917
KY. 646
GoodOver: SPENCER CREEK
150 FT S OF JCT KY 713, Montgomery, KY
Built 2005 Load: 49.4 t ADT: 342
KY-713
GoodOver: Hinkston Creek
100 FT E OF TENNEY AVE, Montgomery, KY
Built 2020 Load: 52.5 t ADT: 1,257
ROGERS MILL RD
GoodOver: PEYTONS LICK BRANCH
1.5 MI E OF BOURBON CO.LN, Montgomery, KY
Built 1983 Load: 53.4 t ADT: 265
KY-1991
GoodOver: HINKSTON CREEK
.70 MI N OF I-64 OP, Montgomery, KY
Built 1969 Load: 54.3 t ADT: 747
KY-1991
GoodOver: HINKSTON CR.
.70 MI S. OF I-64 OP, Montgomery, KY
Built 1972 Load: 59.0 t ADT: 1,340
KY-1331
GoodOver: SLATE CREEK
3.3 MI E JCT US 60, Montgomery, KY
Built 1996 Load: 61.6 t ADT: 458
KY-599
GoodOver: UPPER SPRUCE CREEK
2.9 MI SOUTH OF US 460, Montgomery, KY
Built 2002 Load: 75.3 t ADT: 219
KY-646
GoodOver: LULBEGRUD CR @LEVEE
100 S of N Jct KY 11, Montgomery, KY
Built 1969 Load: 99.9 t ADT: 909
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.