County profile · official public datasets

Jefferson County, FL

70 public highway bridges tracked in the FHWA National Bridge Inventory: 30% rated Good, 67.1% Fair, 2.9% Poor.

70
Public bridges: 30%
Good condition: 2.9%
Poor condition

The verdict

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

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

39th
of 67 on Poor share: 2.9%
Poor-condition share: 70
public highway bridges: 1976
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.

Jefferson County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Jefferson County ranks #39 of 67 Florida counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2.9%). Jefferson County, Florida contains 70 public highway bridges. Roughly 30% are rated “Good,” 67.1% “Fair,” and 2.9% “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 Jefferson County

Good condition

30%

21 of 70 rated 7-9

Fair condition

67.1%

47 of 70 rated 5-6

Poor condition

2.9%

2 of 70 rated 4 or below

In-state Poor-share rank

#39 of 67

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

Condition distribution

Share of 70 NBI-tracked bridges by lowest applicable component rating.

Good

30% (21)

Fair

67.1% (47)

Poor

2.9% (2)

Jefferson County's Poor-condition bridges carry 2,000 vehicle crossings a day

That is 0.6% of the county's reported daily bridge traffic on 2.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,000 crossings a day against 4,641 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 70 of 70 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

61.4% of Jefferson County's bridges have passed the 50-year mark

43 of the 70 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 30% 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 80% of the county's Poor-condition bridge traffic

CR 259 over SCL Railroad, built 1977, carries 1,600 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 2-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 2,000 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1900s

1
1940s

2
1950s

17
1960s

5
1970s

22
1980s

4
1990s

8
2000s

5
2010s

3
2020s

3

What this shows Construction peaked in the 1970s, when 22 of the county's bridges still in the inventory were built, which is 31.4% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year is 1976, 7 years older than the Florida average of 1983.

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

The 5 Florida counties nearest Jefferson County in number of bridges, with their condition splits. Its 2.9% Poor share is the 4th-lowest of these 6. Its average build year of 1976 against a peer-group mean of 1975 is in line with the group.

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

Bridge inventory size and condition shares for Jefferson County and the 5 Florida counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Liberty County	77	19.5%	66.2%	14.3%	1974
Bradford County	75	46.7%	48%	5.3%	1976
Levy County	73	39.7%	57.5%	2.7%	1973
Putnam County	73	45.2%	52.1%	2.7%	1979
Jefferson County (this page)	70	30%	67.1%	2.9%	1976
Okeechobee County	67	46.3%	53.7%	0%	1973

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

Similar inventory size

Nearest county inventories outside FL (70 bridges here).

Jasper County, GA · 70 bridges
Treutlen County, GA · 70 bridges
Turner County, GA · 70 bridges
Power County, ID · 70 bridges

Similar average build year

Nearest mean year-built outside FL (1976 here).

Marion County, IN · avg 1976 · 958 bridges
Mohave County, AZ · avg 1976 · 641 bridges
Comanche County, OK · avg 1976 · 593 bridges
Prince George's County, MD · avg 1976 · 576 bridges

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

All 70 Good 21 Fair 47 Poor 2

All bridges (70)

Sort:

Jefferson County Bridge Snapshot

Condition distribution

Jefferson County's Poor-condition bridges carry 2,000 vehicle crossings a day

61.4% of Jefferson County's bridges have passed the 50-year mark

One structure carries 80% of the county's Poor-condition bridge traffic

How Jefferson 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

All bridges (70)

US27 US19 SR20

CR146 (Ashville)

US98 SR30

CR 257

US90 SR10

US 98 SR 30

CR158

CR 146

US98 SR30

US27 SR20

CR 149

SR59

Big Joe Road

US19 SR57

US98 SR30

US98 SR30

SR 59

CR259

CR 257A

US19 SR57

US90 SR10

US19 SR57

SR59

CR 257

US19 SR57

CR 158

CR 149

CR 259-Tram Road

CR 259

US98 SR30

CR 259-Lake Road

I10 SR8

I10 SR8

CR 259

West Lake Road

US19 SR 57

US27 US19 SR20

CR 158

I10 SR8

I10 SR8

US27 SR20

I10 SR8

I10 SR8

I 10 SR 8

I10 SR8

SR 59

SR 59

CR 3-W Lake Road

CR 259-Tram Road

Turkey Scratch Rd

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