County profile · official public datasets

Liberty County, FL

77 public highway bridges tracked in the FHWA National Bridge Inventory: 19.5% rated Good, 66.2% Fair, 14.3% Poor.

77
Public bridges: 19.5%
Good condition: 14.3%
Poor condition

The verdict

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

Liberty 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.

65th
of 67 on Poor share: 14.3%
Poor-condition share: 77
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.

Liberty County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Liberty County ranks #65 of 67 Florida counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 14.3%). Liberty County, Florida contains 77 public highway bridges. Roughly 19.5% are rated “Good,” 66.2% “Fair,” and 14.3% “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 Liberty County

Good condition

19.5%

15 of 77 rated 7-9

Fair condition

66.2%

51 of 77 rated 5-6

Poor condition

14.3%

11 of 77 rated 4 or below

In-state Poor-share rank

#65 of 67

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

Condition distribution

Share of 77 NBI-tracked bridges by lowest applicable component rating.

Good

19.5% (15)

Fair

66.2% (51)

Poor

14.3% (11)

Liberty County's Poor-condition bridges carry 7,050 vehicle crossings a day

That is 10.1% of the county's reported daily bridge traffic on 14.3% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 641 crossings a day against 1,191 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 77 of 77 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

54.5% of Liberty County's bridges have passed the 50-year mark

42 of the 77 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 19.5% 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 29.8% of the county's Poor-condition bridge traffic

CR 12 over Big Gulley Creek, built 1940, carries 2,100 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 11-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 7,050 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1900s

1
1930s

1
1940s

4
1950s

13
1960s

20
1970s

10
1980s

6
1990s

12
2000s

7
2010s

1
2020s

2

What this shows Construction peaked in the 1960s, when 20 of the county's bridges still in the inventory were built, which is 26% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1974, 9 years older than the Florida average of 1983.

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

The 5 Florida counties nearest Liberty County in number of bridges, with their condition splits. Its 14.3% Poor share is the 6th-lowest of these 6. Its average build year of 1974 against a peer-group mean of 1977 is in line with the group.

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

Bridge inventory size and condition shares for Liberty County and the 5 Florida counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Marion County	78	52.6%	44.9%	2.6%	1979
Liberty County (this page)	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	70	30%	67.1%	2.9%	1976

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

Similar inventory size

Nearest county inventories outside FL (77 bridges here).

Clear Creek County, CO · 77 bridges
Appling County, GA · 77 bridges
Baldwin County, GA · 77 bridges
Cass County, IL · 77 bridges

Similar average build year

Nearest mean year-built outside FL (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 77 Good 15 Fair 51 Poor 11

All bridges (77)

Sort:

Liberty County Bridge Snapshot

Condition distribution

Liberty County's Poor-condition bridges carry 7,050 vehicle crossings a day

54.5% of Liberty County's bridges have passed the 50-year mark

One structure carries 29.8% of the county's Poor-condition bridge traffic

How Liberty 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 (77)

BLACK CREEK-Bridge

WARMOUTH-Bridge

SOUTH CREEK-Bridge

TIGER CREEK-Bridge

BAY CREEK-Bridge

BAY CREEK-Bridge

JUNIPER CREEK-Brid

JUNIPER CREEK-Brid

CR 379

JUNIPER CREEK-Brid

JUNIPER CREEK-Brid

Dempsey Barron Rd

BLACK CREEK-Bridge

CAT BRANCH-Bridge

FSR 125

KENNEDY CREEK-Brid

CR 379

SR 65

SR 65

CR 67

SR20

SR65

CR 12

NWFWMD Road

NWFWMD Rd

County Line Road

CR 379

CR 368

SR65

CR 67

SR20

SR 65

NWFWMD Rd

NWFWMD Rd

NWFWMD Rd

SR20

CR 67

CR 379

CR 67

SR20

NWFWMD Road

CR67

CR 267

CR 379

CR 379

CR 379

SR20

SR20

SR65

CR 270

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