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

70

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.

When Jefferson County's bridges were built

70 bridges with a recorded construction year, grouped by decade

bridges

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.

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

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 Poor
Liberty County 77 14.3%
Bradford County 75 5.3%
Levy County 73 2.7%
Putnam County 73 2.7%
Jefferson County (this page) 70 2.9%
Okeechobee County 67 0%

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).

Similar average build year

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

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)

Walker Springs Rd

Good

Over: Welaunee Creek

4.4 Miles East of CR 259, Jefferson, FL

Built 2003 Load: 35.4 t ADT: 47

Watermill Road

Good

Over: Lloyd Creek

1.9 Miles West of CR 259, Jefferson, FL

Built 2003 Load: 39.9 t ADT: 1,500

Oneal Trail

Good

Over: Jones Mill Creek

5.0 Mi S of Walker Spring, Jefferson, FL

Built 2004 Load: 42.6 t ADT: 165

US 90 SR 10

Good

Over: No Name Creek

2.0 Miles W of Monticello, Jefferson, FL

Built 1996 Load: 43.5 t ADT: 4,800

Curtis Mill Road

Good

Over: Buggs Creek

0.33MI S Drifton-Aucilla, Jefferson, FL

Built 2020 Load: 43.5 t ADT: 24

I10 SR8

Good

Over: Abandon Railroad

2.2 M. East of US19 SR57, Jefferson, FL

Built 1973 Load: 43.6 t ADT: 10,250

I10 SR8

Good

Over: Abandon Railroad

2.2 M. East of US19 SR57, Jefferson, FL

Built 1973 Load: 43.6 t ADT: 10,250

I10 SR8

Good

Over: FG&A RR

3.6 Miles West of US19, Jefferson, FL

Built 1974 Load: 45.7 t ADT: 15,500

I10 SR8

Good

Over: FG&A RR

3.6 Miles West of US19, Jefferson, FL

Built 1974 Load: 45.7 t ADT: 15,500

US 90 SR 10

Good

Over: Caney Creek

5.0 Miles W OF MONTICELLO, Jefferson, FL

Built 1996 Load: 46.1 t ADT: 3,900

CR158

Good

Over: Lloyd Creek

0.8 MI E of SR 59, Jefferson, FL

Built 2018 Load: 46.4 t ADT: 3,000

I10 SR8

Good

Over: CR257

1.5 Miles S of Aucilla, Jefferson, FL

Built 1973 Load: 46.5 t ADT: 10,250

CR259

Good

Over: Ward Creek

3.6 MI W of US 19, Jefferson, FL

Built 2019 Load: 48.0 t ADT: 300

CR257

Good

Over: Raysor Creek

1.8 Miles South I-10/SR8, Jefferson, FL

Built 1997 Load: 48.1 t ADT: 650

Ed Bishop Road

Good

Over: Wolf Creek

0.9 Miles East of CR 257, Jefferson, FL

Built 2006 Load: 48.1 t ADT: 60

I10 SR8

Good

Over: US19 SR57

4.7 Miles S OF US90 SR10, Jefferson, FL

Built 1974 Load: 49.0 t ADT: 15,500

SR10 US90

Good

Over: Stream

4.1Mi east of SR57 US19, Jefferson, FL

Built 2021 Load: 62.4 t ADT: 2,600

US 90 SR 10

Good

Over: Stream

8.8 MI E of US19/SR57, Jefferson, FL

Built 2021 Load: 67.3 t ADT: 1,700

CR 259

Poor

Over: SCL Railroad

3.5 Mi West of US19/SR57, Jefferson, FL

Built 1977 Load: 42.6 t ADT: 1,600

CR257

Poor

Over: Aucilla River

7.9 Miles South US19/SR20, Jefferson, FL

Built 1984 Load: 53.5 t ADT: 400

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.