Total bridges
77
Public highway bridges in Liberty County
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.
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.
When Liberty County's bridges were built
77 bridges with a recorded construction year, grouped by decade
- 1900s 1
1900–1909
1 bridges
- 1930s 1
1930–1939
1 bridges
- 1940s 4
1940–1949
4 bridges
- 1950s
1950–1959
13 bridges
- 1960s
1960–1969
20 bridges
- 1970s
1970–1979
10 bridges
- 1980s 6
1980–1989
6 bridges
- 1990s
1990–1999
12 bridges
- 2000s 7
2000–2009
7 bridges
- 2010s 1
2010–2019
1 bridges
- 2020s 2
2020–2029
2 bridges
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.
| 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.
Poor-condition bridges (11)
CR 12
PoorOver: Little Gulley Creek
8.7 Miles West of SR 65, Liberty, FL
Built 1940 Load: 17.2 t ADT: 2,100
CR 379
PoorOver: Kennedy Creek
7.6 Miles West of SR 65, Liberty, FL
Built 1958 Load: 17.2 t ADT: 250
CR 379
PoorOver: Mary Branch
1.4 Miles South of CR 12, Liberty, FL
Built 1951 Load: 20.0 t ADT: 250
CR 67
PoorOver: Gully Branch
18.0 Miles East of SR 65, Liberty, FL
Built 1960 Load: 20.9 t ADT: 700
CR 368
PoorOver: Porter Lake Relief
2.4 Miles East of CR 67, Liberty, FL
Built 1964 Load: 31.8 t ADT: 250
CR 368
PoorOver: Ochlockonee River
3.1 Miles East of CR 67, Liberty, FL
Built 1984 Load: 38.0 t ADT: 250
CR 368
PoorOver: Porter Lake
2.7 Miles East of CR 67, Liberty, FL
Built 1984 Load: 38.1 t ADT: 250
CR 12
PoorOver: Big Gulley Creek
7.8 Miles West of SR 65, Liberty, FL
Built 1940 Load: 38.1 t ADT: 2,100
CR 2224
PoorOver: Blue Creek
2.9 Miles South of SR 20, Liberty, FL
Built 1957 Load: 41.7 t ADT: 350
CR 368
PoorOver: Ochlockonee River Relief
3.0 Miles East of CR 67, Liberty, FL
Built 1984 Load: 48.1 t ADT: 250
CR 12
PoorOver: Rowletts Creek
0.5 Mi West of SR 65, Liberty, FL
Built 2009 Load: 99.9 t ADT: 300
Read our methodology - how this data is sourced, computed, and verified.
Related
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.