County profile · official public datasets

Clay County, FL

90 public highway bridges tracked in the FHWA National Bridge Inventory: 47.8% rated Good, 48.9% Fair, 3.3% Poor.

90
Public bridges: 47.8%
Good condition: 3.3%
Poor condition

The verdict

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

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

41st
of 67 on Poor share: 3.3%
Poor-condition share: 90
public highway bridges: 1984
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.

Clay County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Clay County ranks #41 of 67 Florida counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 3.3%). Clay County, Florida contains 90 public highway bridges. Roughly 47.8% are rated “Good,” 48.9% “Fair,” and 3.3% “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 Clay County

Good condition

47.8%

43 of 90 rated 7-9

Fair condition

48.9%

44 of 90 rated 5-6

Poor condition

3.3%

3 of 90 rated 4 or below

In-state Poor-share rank

#41 of 67

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

Condition distribution

Share of 90 NBI-tracked bridges by lowest applicable component rating.

Good

47.8% (43)

Fair

48.9% (44)

Poor

3.3% (3)

Clay County's Poor-condition bridges carry 16,611 vehicle crossings a day

That is 2% of the county's reported daily bridge traffic on 3.3% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 5,537 crossings a day against 8,919 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 90 of 90 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

44.4% of Clay County's bridges have passed the 50-year mark

40 of the 90 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 47.8% 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 54.2% of the county's Poor-condition bridge traffic

CR 220 over LITTLE BLACK CREEK, built 1947, carries 9,000 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 16,611 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1930s

2
1940s

8
1950s

10
1960s

13
1970s

7
1980s

8
1990s

13
2000s

1
2010s

23
2020s

5

What this shows Construction peaked in the 2010s, when 23 of the county's bridges still in the inventory were built, which is 25.6% of those with a recorded year. That cohort is now 5 to 14 years old in the 2024 inventory. Its average build year (1984) matches the Florida average (1983).

How Clay County compares with Florida's closest counties by inventory size

The 5 Florida counties nearest Clay County in number of bridges, with their condition splits. Its 3.3% Poor share is the 1st-lowest of these 6. Its average build year of 1984 against a peer-group mean of 1976 is 8 years newer.

Showing the 5 closest of 66 Florida counties eligible for comparison.

Bridge inventory size and condition shares for Clay County and the 5 Florida counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Washington County	99	43.4%	46.5%	10.1%	1984
Baker County	93	26.9%	64.5%	8.6%	1966
Taylor County	90	32.2%	58.9%	8.9%	1963
Clay County (this page)	90	47.8%	48.9%	3.3%	1984
Hendry County	87	66.7%	29.9%	3.4%	1985
Hardee County	85	43.5%	52.9%	3.5%	1983

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

Similar inventory size

Nearest county inventories outside FL (90 bridges here).

Greenlee County, AZ · 90 bridges
Monroe County, GA · 90 bridges
Kauai County, HI · 90 bridges
Kiowa County, KS · 90 bridges

Similar average build year

Nearest mean year-built outside FL (1984 here).

Hennepin County, MN · avg 1984 · 936 bridges
El Paso County, CO · avg 1984 · 686 bridges
Bell County, TX · avg 1984 · 660 bridges
Steuben County, NY · avg 1984 · 627 bridges

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

All 90 Good 43 Fair 44 Poor 3

Good-condition bridges (43)

Sort:

Clay County Bridge Snapshot

Condition distribution

Clay County's Poor-condition bridges carry 16,611 vehicle crossings a day

44.4% of Clay County's bridges have passed the 50-year mark

One structure carries 54.2% of the county's Poor-condition bridge traffic

How Clay County compares with Florida'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 (43)

CR 224

SR-21

SR-16 WB

SR-16 EB

SR 23 SB 33.4

US-17 SB (SR-15)

PLANTATION OAKS BL

SR 23 NB 33.4

CR 209

SR 23 NB/SB 32.5

PLANTATION OAKS BL

CR 739NB HENLEY RD

CR739 SB HENLEY RD

SR 23 NB 35.3

SR 23 SB 35.3

SR-15

US-17 (SR-15)

KINGSLEY LAKE DR

SR-21

CR-218

SR-23 SB 35.7

US-17 NB (SR-15)

CR 209

WILLIAMS PARK ROAD

SR-21

Sandridge Road

SR 23 NB 35.7

CR209 (Russell Rd)

SR-21

CR 220

SHARRON ROAD

SR 23 NB 32.1

SR 23 SB 32.1

J.P. HALL BLVD

SR 23 NB

SR-21

SR 23 ON-RAMP 31.0

ROSEMARY HILL RD

CE Access Rd.

SR-16

SR 23 SB

US-301 NB (SR-200)

PLANTATION OAKS BV

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