County profile · official public datasets

Floyd County, IN

145 public highway bridges tracked in the FHWA National Bridge Inventory: 34.5% rated Good, 60.7% Fair, 4.8% Poor.

145
Public bridges: 34.5%
Good condition: 4.8%
Poor condition

The verdict

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

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

48th
of 92 on Poor share: 4.8%
Poor-condition share: 145
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.

Floyd County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Floyd County ranks #48 of 92 Indiana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 4.8%). Floyd County, Indiana contains 145 public highway bridges. Roughly 34.5% are rated “Good,” 60.7% “Fair,” and 4.8% “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.

Total bridges

145

Public highway bridges in Floyd County

Good condition

34.5%

50 of 145 rated 7-9

Fair condition

60.7%

88 of 145 rated 5-6

Poor condition

4.8%

7 of 145 rated 4 or below

In-state Poor-share rank

#48 of 92

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

Condition distribution

Share of 145 NBI-tracked bridges by lowest applicable component rating.

Good

34.5% (50)

Fair

60.7% (88)

Poor

4.8% (7)

Floyd County's Poor-condition bridges carry 37,242 vehicle crossings a day

That is 2.3% of the county's reported daily bridge traffic on 4.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 5,320 crossings a day against 7,731 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 144 of 145 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

58.6% of Floyd County's bridges have passed the 50-year mark

85 of the 145 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 34.5% 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 42.5% of the county's Poor-condition bridge traffic

I-64 EB over SR 62/64 EB/WB, built 1974, carries 15,821 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 7-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 37,242 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1920s

7
1930s

6
1940s

5
1950s

4
1960s

33
1970s

38
1980s

19
1990s

10
2000s

11
2010s

9
2020s

3

What this shows Construction peaked in the 1970s, when 38 of the county's bridges still in the inventory were built, which is 26.2% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year (1974) matches the Indiana average (1978).

How Floyd County compares with Indiana's closest counties by inventory size

The 5 Indiana counties nearest Floyd County in number of bridges, with their condition splits. Its 4.8% Poor share is the 4th-lowest of these 6. Its average build year of 1974 against a peer-group mean of 1979 is 5 years older.

Showing the 5 closest of 91 Indiana counties eligible for comparison.

Bridge inventory size and condition shares for Floyd County and the 5 Indiana counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Benton County	151	45.7%	52.3%	2%	1986
Perry County	151	41.1%	57%	2%	1978
Owen County	150	38.7%	51.3%	10%	1978
DeKalb County	149	40.9%	59.1%	0%	1980
Dearborn County	145	35.9%	51.7%	12.4%	1974
Floyd County (this page)	145	34.5%	60.7%	4.8%	1974

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

Similar inventory size

Nearest county inventories outside IN (145 bridges here).

McDonald County, MO · 145 bridges
Lenoir County, NC · 145 bridges
Washington County, RI · 145 bridges
Monroe County, TN · 145 bridges

Similar average build year

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

Knox County, TN · avg 1974 · 588 bridges
Summit County, OH · avg 1974 · 563 bridges
Onondaga County, NY · avg 1974 · 472 bridges
Orange County, NY · avg 1974 · 472 bridges

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

All 145 Good 50 Fair 88 Poor 7

All bridges (145)

Sort:

Floyd County Bridge Snapshot

Condition distribution

Floyd County's Poor-condition bridges carry 37,242 vehicle crossings a day

58.6% of Floyd County's bridges have passed the 50-year mark

One structure carries 42.5% of the county's Poor-condition bridge traffic

How Floyd County compares with Indiana's closest counties by inventory size

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

All bridges (145)

I-64 WBL RAMP 123C

PEARL ST

SCTSVILLE-NAVILLE.

STILLER Rd

I-64 WB

ST MARYS RD

SPICKERT KNOB RD

ARTHUR COFFMAN RD

I-64

BANET RD

I-265 RAMP B (WBL)

SR 111

SCOTTSVILLE RD

I-64 EB

MALINEE-OTT RD

I-64 WB

SR 311

US 150 EB

US 150 WB

GREEN VALLEY ROAD

NAVILLETON Rd

I-64

PAYNE-KOEHLER ROAD

DUFFY RD

I-64 WB

I-64 WB

SR 335

I-64 WBL

SCRIBNER DR

I-64 EB

BEAR CREEK ROAD

I-64 WB

BORDEN RD

US 150 & RAMPS

I-265 EB

I-265 WB

US 150 EB

US 150 WB

GTOWN-GREENVILLE

GTOWN-GREENVILLE

BAYLOR-WISSMAN RD

MOSER KNOB

SCOTTSVILLE RD

ST MARYS RD

PAOLI PIKE

HIGHWATER RD

MARY NAVILE RD

BORDEN RD

E MCCARTHY KNOB RD

SPRING HILL RD

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