County profile · official public datasets

Harrison County, KY

153 public highway bridges tracked in the FHWA National Bridge Inventory: 38.6% rated Good, 55.6% Fair, 5.9% Poor.

153
Public bridges: 38.6%
Good condition: 5.9%
Poor condition

The verdict

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

Harrison County posts a better-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.

Top 37%
lowest Poor share in state: 5.9%
Poor-condition share: 153
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.

Harrison County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Harrison County ranks #44 of 120 Kentucky counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 5.9%). Harrison County, Kentucky contains 153 public highway bridges. Roughly 38.6% are rated “Good,” 55.6% “Fair,” and 5.9% “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

153

Public highway bridges in Harrison County

Good condition

38.6%

59 of 153 rated 7-9

Fair condition

55.6%

85 of 153 rated 5-6

Poor condition

5.9%

9 of 153 rated 4 or below

In-state Poor-share rank

#44 of 120

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

Condition distribution

Share of 153 NBI-tracked bridges by lowest applicable component rating.

Good

38.6% (59)

Fair

55.6% (85)

Poor

5.9% (9)

Harrison County's Poor-condition bridges carry 4,794 vehicle crossings a day

That is 3.5% of the county's reported daily bridge traffic on 5.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 533 crossings a day against 882 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 153 of 153 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

34% of Harrison County's bridges have passed the 50-year mark

52 of the 153 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 38.6% 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 61.3% of the county's Poor-condition bridge traffic

US-62 over INDIAN CREEK, built 1928, carries 2,938 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 9-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 4,794 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1920s

8
1930s

15
1940s

7
1950s

9
1960s

10
1970s

8
1980s

14
1990s

36
2000s

24
2010s

18
2020s

4

What this shows Construction peaked in the 1990s, when 36 of the county's bridges still in the inventory were built, which is 23.5% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year (1981) matches the Kentucky average (1978).

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

The 5 Kentucky counties nearest Harrison County in number of bridges, with their condition splits. Its 5.9% Poor share is the 4th-lowest of these 6. Its average build year of 1981 against a peer-group mean of 1976 is 5 years newer.

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

Bridge inventory size and condition shares for Harrison County and the 5 Kentucky counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Madison County	154	29.2%	66.9%	3.9%	1977
Harrison County (this page)	153	38.6%	55.6%	5.9%	1981
Muhlenberg County	152	12.5%	82.9%	4.6%	1967
Nelson County	151	40.4%	51.7%	7.9%	1974
Lewis County	149	28.9%	67.1%	4%	1982
Marion County	149	53%	39.6%	7.4%	1981

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

Similar inventory size

Nearest county inventories outside KY (153 bridges here).

Sussex County, DE · 153 bridges
Jefferson County, IN · 153 bridges
Roger Mills County, OK · 153 bridges
Perry County, TN · 153 bridges

Similar average build year

Nearest mean year-built outside KY (1981 here).

Franklin County, OH · avg 1981 · 922 bridges
Greenville County, SC · avg 1981 · 635 bridges
Montgomery County, OH · avg 1981 · 632 bridges
McLean County, IL · avg 1981 · 624 bridges

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

All 153 Good 59 Fair 85 Poor 9

Good-condition bridges (59)

Sort:

Harrison County Bridge Snapshot

Condition distribution

Harrison County's Poor-condition bridges carry 4,794 vehicle crossings a day

34% of Harrison County's bridges have passed the 50-year mark

One structure carries 61.3% of the county's Poor-condition bridge traffic

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

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

Good-condition bridges (59)

PARK ENTRANCE

US-62

SMITH MARTIN RD

US-27

LANGLEY RD

SMITHSONVILLE ROAD

SNAKE LICK RD

KINGS LN

US-27

POINDEXTER

BOYERS CHAPEL RD

WAITS ROAD

SHADY NOOK RD

KY 62

STRATTON PK

SYLVANDELL

WHITSON RD

NEBO RD

APPLE LANE

US-27

KY-356

CASEY MILL

BRUSHY FORK RD

SHADY NOOK RD

DIXON RD

BOYERS CHAPEL RD

KY-1054

TWIN CREEK ROAD

ROBINSON UNION

HINTON WEBBER

US-62

Boyers Chapel Rd.

FALMOUTH-SUNRISE

FALMOUTH-SUNRISE

KY-356

SOUTH EDGEWATER RD

KY-36

ROBINSON RENAKER

PLEASANT SPRING

STRINGTOWN WEBBER

TWIN CREEK

BOBTOWN ROAD

OLD LEESBURG ROAD

US-62

SNAKE LICK RD

LOWER TWO LICK RD

KY-1032

CUMMINGS ROAD

SNAKE LICK ROAD

Mouth of Cedar RD

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