County profile · official public datasets

Calhoun County, FL

49 public highway bridges tracked in the FHWA National Bridge Inventory: 24.5% rated Good, 73.5% Fair, 2% Poor.

49
Public bridges: 24.5%
Good condition: 2%
Poor condition

The verdict

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

Calhoun County pairs a better-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.

Top 49%
lowest Poor share in state: 2%
Poor-condition share: 49
public highway bridges: 1971
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.

Calhoun County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Calhoun County ranks #33 of 67 Florida counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2%). Calhoun County, Florida contains 49 public highway bridges. Roughly 24.5% are rated “Good,” 73.5% “Fair,” and 2% “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 Calhoun County

Good condition

24.5%

12 of 49 rated 7-9

Fair condition

73.5%

36 of 49 rated 5-6

Poor condition

1 of 49 rated 4 or below

In-state Poor-share rank

#33 of 67

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

Condition distribution

Share of 49 NBI-tracked bridges by lowest applicable component rating.

Good

24.5% (12)

Fair

73.5% (36)

Poor

2% (1)

Calhoun County's Poor-condition bridges carry 2,600 vehicle crossings a day

That is 2.3% of the county's reported daily bridge traffic on 2% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 2,600 crossings a day against 4,389 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 49 of 49 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

65.3% of Calhoun County's bridges have passed the 50-year mark

32 of the 49 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 24.5% 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 100% of the county's Poor-condition bridge traffic

SR71 over Baker Branch, built 1952, carries 2,600 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 1-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 2,600 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1930s

2
1940s

8
1950s

13
1960s

8
1970s

3
1990s

7
2000s

2
2010s

5
2020s

1

What this shows Construction peaked in the 1950s, when 13 of the county's bridges still in the inventory were built, which is 26.5% of those with a recorded year. That cohort is now 65 to 74 years old in the 2024 inventory. Its average build year is 1971, 12 years older than the Florida average of 1983.

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

The 5 Florida counties nearest Calhoun County in number of bridges, with their condition splits. Its 2% Poor share is the 2nd-lowest of these 6. Its average build year of 1971 against a peer-group mean of 1980 is 9 years older.

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

Bridge inventory size and condition shares for Calhoun County and the 5 Florida counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
DeSoto County	57	36.8%	59.6%	3.5%	1979
Dixie County	55	45.5%	45.5%	9.1%	1968
Citrus County	53	69.8%	30.2%	0%	1987
Calhoun County (this page)	49	24.5%	73.5%	2%	1971
Wakulla County	48	37.5%	50%	12.5%	1979
Franklin County	43	7%	51.2%	41.9%	1988

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

Similar inventory size

Nearest county inventories outside FL (49 bridges here).

Mono County, CA · 49 bridges
Yuma County, CO · 49 bridges
Crawford County, GA · 49 bridges
Johnson County, GA · 49 bridges

Similar average build year

Nearest mean year-built outside FL (1971 here).

Wayne County, MI · avg 1971 · 1,026 bridges
Baltimore County, MD · avg 1971 · 783 bridges
Washington County, PA · avg 1971 · 655 bridges
Linn County, OR · avg 1971 · 566 bridges

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

All 49 Good 12 Fair 36 Poor 1

Fair-condition bridges (36)

Sort:

Calhoun County Bridge Snapshot

Condition distribution

Calhoun County's Poor-condition bridges carry 2,600 vehicle crossings a day

65.3% of Calhoun County's bridges have passed the 50-year mark

One structure carries 100% of the county's Poor-condition bridge traffic

How Calhoun 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

Fair-condition bridges (36)

CR 392

CR 69A

CR 274

CR 274

SR20

SR71

SR69

SR73

CR 287

SR71

CR 275

SR20

CR 274

11th Street

Charley Johns St

SR73

Northwest Gray Rd

CR 392

CR 69A

CR 274

SR71

CR 274

CR 274

SR20

CR 69

CR 286

CR 69A

CR 392

SR 73

CR 194

CR 275

SR20

CR 275

Leonard Varnum Rd

SR73

CR 275

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