County profile · official public datasets

Bourbon County, KY

112 public highway bridges tracked in the FHWA National Bridge Inventory: 18.8% rated Good, 78.6% Fair, 2.7% Poor.

112
Public bridges
18.8%
Good condition
2.7%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Bourbon County posts a top-10% lowest Poor-condition share among rated counties in the state across mid-size county bridge inventory.

Top 8%
lowest Poor share in state
2.7%
Poor-condition share
112
public highway bridges
1974
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.

Bourbon County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Bourbon County ranks #9 of 120 Kentucky counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2.7%). Bourbon County, Kentucky contains 112 public highway bridges. Roughly 18.8% are rated “Good,” 78.6% “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.

Total bridges

112

Public highway bridges in Bourbon County

Good condition

18.8%

21 of 112 rated 7-9

Fair condition

78.6%

88 of 112 rated 5-6

Poor condition

2.7%

3 of 112 rated 4 or below

In-state Poor-share rank

#9 of 120

Among Kentucky counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 112 NBI-tracked bridges by lowest applicable component rating.

Good
18.8% (21)
Fair
78.6% (88)
Poor
2.7% (3)

Bourbon County's Poor-condition bridges carry 5,917 vehicle crossings a day

That is 3.2% of the county's reported daily bridge traffic on 2.7% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 1,972 crossings a day against 2,496 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 112 of 112 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

47.3% of Bourbon County's bridges have passed the 50-year mark

53 of the 112 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 18.8% 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 87.7% of the county's Poor-condition bridge traffic

US-27 over TOWNSEND CREEK, built 1948, carries 5,187 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 3-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 5,917 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Bourbon County's bridges were built

112 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1990s, when 21 of the county's bridges still in the inventory were built, which is 18.8% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year (1974) matches the Kentucky average (1978).

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

How Bourbon County compares with Kentucky's closest counties by inventory size

The 5 Kentucky counties nearest Bourbon 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 1974 against a peer-group mean of 1978 is in line with the group.

Showing the 5 closest of 119 Kentucky counties eligible for comparison.

Bridge inventory size and condition shares for Bourbon County and the 5 Kentucky counties closest to it in inventory size
County Bridges Poor
Caldwell County 116 6.9%
Morgan County 114 2.6%
Leslie County 112 13.4%
Bourbon County (this page) 112 2.7%
Powell County 110 1.8%
Trigg County 109 9.2%

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 Bourbon 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 Bourbon County, both outside Kentucky so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside KY (112 bridges here).

Similar average build year

Nearest mean year-built outside KY (1974 here).

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All bridges (112)

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.