County profile · official public datasets

Trimble County, KY

44 public highway bridges tracked in the FHWA National Bridge Inventory: 11.4% rated Good, 79.5% Fair, 9.1% Poor.

44
Public bridges
11.4%
Good condition
9.1%
Poor condition

The verdict

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

Trimble County pairs a higher-than-median Poor-condition share among rated counties in the state with a newer average build year than the state inventory.

87th
of 120 on Poor share
9.1%
Poor-condition share
44
public highway bridges
1985
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.

Trimble County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Trimble County ranks #87 of 120 Kentucky counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 9.1%). Trimble County, Kentucky contains 44 public highway bridges. Roughly 11.4% are rated “Good,” 79.5% “Fair,” and 9.1% “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

44

Public highway bridges in Trimble County

Good condition

11.4%

5 of 44 rated 7-9

Fair condition

79.5%

35 of 44 rated 5-6

Poor condition

9.1%

4 of 44 rated 4 or below

In-state Poor-share rank

#87 of 120

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

Condition distribution

Share of 44 NBI-tracked bridges by lowest applicable component rating.

Good
11.4% (5)
Fair
79.5% (35)
Poor
9.1% (4)

Trimble County's Poor-condition bridges carry 4,013 vehicle crossings a day

That is 11.4% of the county's reported daily bridge traffic on 9.1% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 1,003 crossings a day against 640 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 44 of 44 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

22.7% of Trimble County's bridges have passed the 50-year mark

10 of the 44 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 11.4% 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 83.3% of the county's Poor-condition bridge traffic

KY 36 over CANIP CREEK, built 1933, carries 3,341 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 4-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 4,013 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Trimble County's bridges were built

44 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1980s, when 12 of the county's bridges still in the inventory were built, which is 27.3% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year is 1985, 7 years newer than the Kentucky average of 1978.

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

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

The 5 Kentucky counties nearest Trimble County in number of bridges, with their condition splits. Its 9.1% Poor share is the 5th-lowest of these 6. Its average build year of 1985 against a peer-group mean of 1976 is 9 years newer.

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

Bridge inventory size and condition shares for Trimble County and the 5 Kentucky counties closest to it in inventory size
County Bridges Poor
Bracken County 49 18.4%
Menifee County 49 0%
Russell County 46 8.7%
Trimble County (this page) 44 9.1%
Lee County 42 7.1%
Clinton County 41 7.3%

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

Similar inventory size

Nearest county inventories outside KY (44 bridges here).

Similar average build year

Nearest mean year-built outside KY (1985 here).

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

All 44 Good 5 Fair 35 Poor 4

Fair-condition bridges (35)

JOYCE MILLS RD

Fair

Over: TRIB TO CORN CREEK

0.5 MI E OF KY 625, Trimble, KY

Built 2008 Load: 17.2 t ADT: 20

US 42

Fair

Over: TRIB TO LITTLE KY RIVER

0.55 MI W OF CARROLL CL, Trimble, KY

Built 1931 Load: 18.1 t ADT: 1,424

KY 754

Fair

Over: TRIB TO BAREBONE CREEK

1.55 MI W OF US 42, Trimble, KY

Built 1956 Load: 18.1 t ADT: 728

KY 754

Fair

Over: BROWNING BRANCH

1.45 MI E OF KY 1838, Trimble, KY

Built 1956 Load: 18.1 t ADT: 728

BURKHARDT BOTTM RD

Fair

Over: GILMORE CREEK

0.85 MI N OF KY 1256, Trimble, KY

Built 1989 Load: 18.5 t ADT: 50

KY 316

Fair

Over: DAUGHERTY CREEK

270 FT W OF KY 1335, Trimble, KY

Built 1953 Load: 22.7 t ADT: 218

MILLERS BRANCH RD

Fair

Over: MILLERS BRANCH

0.3 MI N OF US 42, Trimble, KY

Built 1994 Load: 23.0 t ADT: 30

KY 1488

Fair

Over: PATTONS CREEK

AT OLDHAM CL, Trimble, KY

Built 1954 Load: 23.6 t ADT: 81

KY 316

Fair

Over: CARMON CREEK

1.55 MI E OF US 42, Trimble, KY

Built 1953 Load: 27.0 t ADT: 218

HARDY CREEK RD

Fair

Over: TRIB TO HARDY CREEK

1.2 MI W OF US 42, Trimble, KY

Built 1999 Load: 27.0 t ADT: 50

KY 3175

Fair

Over: TRIB TO LITTLE KY RIVER

2.0 MI S OF US 42, Trimble, KY

Built 1975 Load: 29.1 t ADT: 189

US 421

Fair

Over: OHIO RIVER

AT KY/IN STATE LINE, Trimble, KY

Built 2014 Load: 31.1 t ADT: 8,975

WISES LANDING RD

Fair

Over: MIDDLE CREEK

2.7 MI S OF KY 754, Trimble, KY

Built 1994 Load: 33.0 t ADT: 75

HARDY CREEK RD

Fair

Over: HARDY CREEK

0.7 MI W OF JCT US 42, Trimble, KY

Built 1997 Load: 33.1 t ADT: 50

KY 6334

Fair

Over: TIBER CREEK

225 FT W SCH HOLLOW RD, Trimble, KY

Built 1989 Load: 34.6 t ADT: 10

US 42

Fair

Over: HARDY CREEK

2.9 MI W OF CARROLL CL, Trimble, KY

Built 1985 Load: 35.9 t ADT: 1,424

WISES LANDING RD

Fair

Over: CARTERS BRANCH

0.85 MI S OF KY 754, Trimble, KY

Built 1987 Load: 39.0 t ADT: 100

LOGAN LN EXT

Fair

Over: TRIB TO LITTLE KY RIVER

1.25 MI E OF US 42, Trimble, KY

Built 1994 Load: 39.5 t ADT: 40

KY 1335

Fair

Over: BUCK CREEK

0.9 MI W OF CARROLL CL, Trimble, KY

Built 1953 Load: 39.9 t ADT: 158

SMITH LN

Fair

Over: TRIB TO LITTLE KY RIVER

0.1 MI W OF US 421, Trimble, KY

Built 1992 Load: 40.8 t ADT: 150

EWINGSFORD RD

Fair

Over: TOWN BRANCH

60 FT E OF US 421, Trimble, KY

Built 1993 Load: 41.4 t ADT: 90

US 421 ESCAPE RAMP

Fair

Over: TIBER CREEK

300 FT E OF US 421, Trimble, KY

Built 1989 Load: 41.5 t ADT: 5,533

PATTONS CREEK RD

Fair

Over: TRIB TO PATTONS CREEK

1.8 MI W OF US 42, Trimble, KY

Built 1992 Load: 41.5 t ADT: 150

KY 3175

Fair

Over: TRIB TO LITTLE KY RIVER

2.1 MI S OF US 42, Trimble, KY

Built 1980 Load: 41.7 t ADT: 189

CARMON CREEK RD

Fair

Over: TRIB TO CARMON CREEK

1.5 MI N OF US 421, Trimble, KY

Built 1990 Load: 42.9 t ADT: 350

KY 3175

Fair

Over: LITTLE KENTUCKY RIVER

2.5 MI S OF US 42, Trimble, KY

Built 1999 Load: 43.1 t ADT: 189

CARMON CREEK RD

Fair

Over: TRIB TO CARMON CREEK

2.3 MI N OF US 421, Trimble, KY

Built 1998 Load: 43.7 t ADT: 350

KY 3175

Fair

Over: DEMEREE BRANCH

3.45 MI S OF US 42, Trimble, KY

Built 1976 Load: 50.3 t ADT: 189

US 421

Fair

Over: LITTLE KENTUCKY RIVER

0.15 MI N OF KY 316, Trimble, KY

Built 1982 Load: 52.1 t ADT: 2,170

HARDY CREEK RD

Fair

Over: HARDY CREEK

0.3 MI W OF US 42, Trimble, KY

Built 1992 Load: 55.7 t ADT: 75

WISES LANDING RD

Fair

Over: BAREBONE CREEK

0.8 MI S OF KY 754, Trimble, KY

Built 1980 Load: 58.7 t ADT: 100

US 42

Fair

Over: MILLERS BRANCH

1.9 MI W OF CARROLL CL, Trimble, KY

Built 1985 Load: 60.1 t ADT: 1,424

US 421

Fair

Over: TOWN BRANCH

0.35 MI N OF KY 316, Trimble, KY

Built 1984 Load: 61.1 t ADT: 2,170

LOWER PATTONS CRK

Fair

Over: DOG BRANCH

0.5 MI W OF KY 1488, Trimble, KY

Built 2008 Load: 64.8 t ADT: 20

KY 625

Fair

Over: PRYORS FORK

1.2 MI N OF KY 2869, Trimble, KY

Built 2010 Load: 67.4 t ADT: 200

Read our methodology - how this data is sourced, computed, and verified.

Related

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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.