County profile · official public datasets

Oldham County, KY

66 public highway bridges tracked in the FHWA National Bridge Inventory: 7.6% rated Good, 84.8% Fair, 7.6% Poor.

66
Public bridges: 7.6%
Good condition: 7.6%
Poor condition

The verdict

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

Oldham County posts a higher-than-median Poor-condition share among rated counties in the state across rated county bridge inventory.

65th
of 120 on Poor share: 7.6%
Poor-condition share: 66
public highway bridges: 1977
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.

Oldham County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Oldham County ranks #65 of 120 Kentucky counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 7.6%). Oldham County, Kentucky contains 66 public highway bridges. Roughly 7.6% are rated “Good,” 84.8% “Fair,” and 7.6% “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

Public highway bridges in Oldham County

Good condition

7.6%

5 of 66 rated 7-9

Fair condition

84.8%

56 of 66 rated 5-6

Poor condition

7.6%

5 of 66 rated 4 or below

In-state Poor-share rank

#65 of 120

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

Condition distribution

Share of 66 NBI-tracked bridges by lowest applicable component rating.

Good

7.6% (5)

Fair

84.8% (56)

Poor

7.6% (5)

Oldham County's Poor-condition bridges carry 5,053 vehicle crossings a day

That is 1% of the county's reported daily bridge traffic on 7.6% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,011 crossings a day against 2,559 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 66 of 66 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

57.6% of Oldham County's bridges have passed the 50-year mark

38 of the 66 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 7.6% 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 48.6% of the county's Poor-condition bridge traffic

KY 362 over TRIB TO FLOYDS FORK, built 1960, carries 2,456 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 5-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 5,053 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1930s

2
1940s

1
1950s

7
1960s

26
1970s

3
1980s

7
1990s

12
2000s

2
2010s

5
2020s

1

What this shows Construction peaked in the 1960s, when 26 of the county's bridges still in the inventory were built, which is 39.4% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1977) matches the Kentucky average (1978).

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

The 5 Kentucky counties nearest Oldham County in number of bridges, with their condition splits. Its 7.6% Poor share is the 4th-lowest of these 6. Its average build year of 1977 against a peer-group mean of 1975 is in line with the group.

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

Bridge inventory size and condition shares for Oldham County and the 5 Kentucky counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Hancock County	70	8.6%	88.6%	2.9%	1975
Martin County	70	28.6%	58.6%	12.9%	1985
Monroe County	70	15.7%	77.1%	7.1%	1965
Carroll County	68	13.2%	75%	11.8%	1970
Garrard County	67	25.4%	68.7%	6%	1980
Oldham County (this page)	66	7.6%	84.8%	7.6%	1977

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

Similar inventory size

Nearest county inventories outside KY (66 bridges here).

Chugach County, AK · 66 bridges
Inyo County, CA · 66 bridges
Broomfield County, CO · 66 bridges
Cook County, GA · 66 bridges

Similar average build year

Nearest mean year-built outside KY (1977 here).

San Diego County, CA · avg 1977 · 1,632 bridges
King County, WA · avg 1977 · 1,238 bridges
Riverside County, CA · avg 1977 · 1,117 bridges
Shelby County, TN · avg 1977 · 1,077 bridges

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

All 66 Good 5 Fair 56 Poor 5

Fair-condition bridges (56)

Sort:

Oldham County Bridge Snapshot

Condition distribution

Oldham County's Poor-condition bridges carry 5,053 vehicle crossings a day

57.6% of Oldham County's bridges have passed the 50-year mark

One structure carries 48.6% of the county's Poor-condition bridge traffic

How Oldham 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

Fair-condition bridges (56)

KY 2857

BLUEGRASS PKWY

KY 22

KY 524

KY 1818

KY 393

KY 2859

REBEL RIDGE RD

KY 1315

CENTERFIELD DR

KY 3223

KY 393

OLD ZARING RD

KY 146

I-71 SB

I-71 NB

I-71 NB

KY 53

ORCHARD GRASS BLVD

KY 53

KY 1408

GLENARM RD

KY 1694

I-71 SB

KY 53

KY 22

FENDLEY MILL RD

FENDLEY RD

KY 712

I-71 NB

I-71 NB

KY 1818

GRANGE DR

BRIAR HILL PKWY

LESPRIT PKWY

YAGER LN

KY 393

KY 53

BLAKEMORE LN

KY 393

N CAMDEN LN

HALLS HILL RD

KY 524

N ROSE ISLAND

KY 1817

SPANN LN

KY 329

KY 3223

KY 362

BOHANNON LN

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