County profile · official public datasets

Alachua County, FL

115 public highway bridges tracked in the FHWA National Bridge Inventory: 52.2% rated Good, 47% Fair, 0.9% Poor.

115
Public bridges: 52.2%
Good condition: 0.9%
Poor condition

The verdict

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

Alachua 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 31%
lowest Poor share in state: 0.9%
Poor-condition share: 115
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.

Alachua County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Alachua County ranks #21 of 67 Florida counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0.9%). Alachua County, Florida contains 115 public highway bridges. Roughly 52.2% are rated “Good,” 47% “Fair,” and 0.9% “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

115

Public highway bridges in Alachua County

Good condition

52.2%

60 of 115 rated 7-9

Fair condition

47%

54 of 115 rated 5-6

Poor condition

0.9%

1 of 115 rated 4 or below

In-state Poor-share rank

#21 of 67

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

Condition distribution

Share of 115 NBI-tracked bridges by lowest applicable component rating.

Good

52.2% (60)

Fair

47% (54)

Poor

0.9% (1)

Alachua County's Poor-condition bridges carry 11,300 vehicle crossings a day

That is 0.8% of the county's reported daily bridge traffic on 0.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 11,300 crossings a day against 14,481 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 115 of 115 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

67.8% of Alachua County's bridges have passed the 50-year mark

78 of the 115 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 52.2% 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

SR-26 over HATCHET CREEK, built 1959, carries 11,300 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 11,300 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1920s

1
1930s

1
1940s

4
1950s

19
1960s

50
1970s

6
1980s

9
1990s

9
2000s

12
2010s

4

What this shows Construction peaked in the 1960s, when 50 of the county's bridges still in the inventory were built, which is 43.5% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1971, 12 years older than the Florida average of 1983.

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

The 5 Florida counties nearest Alachua County in number of bridges, with their condition splits. Its 0.9% Poor share is the 3rd-lowest of these 6. Its average build year of 1971 against a peer-group mean of 1984 is 13 years older.

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

Bridge inventory size and condition shares for Alachua County and the 5 Florida counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Gadsden County	121	25.6%	61.2%	13.2%	1980
Indian River County	120	75%	23.3%	1.7%	1989
Alachua County (this page)	115	52.2%	47%	0.9%	1971
Lake County	113	67.3%	32.7%	0%	1990
Columbia County	112	50.9%	48.2%	0.9%	1970
Sumter County	112	68.8%	31.3%	0%	1991

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

Similar inventory size

Nearest county inventories outside FL (115 bridges here).

Walton County, GA · 115 bridges
Latah County, ID · 115 bridges
Whitley County, IN · 115 bridges
Carver County, MN · 115 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 115 Good 60 Fair 54 Poor 1

Good-condition bridges (60)

Sort:

Alachua County Bridge Snapshot

Condition distribution

Alachua County's Poor-condition bridges carry 11,300 vehicle crossings a day

67.8% of Alachua County's bridges have passed the 50-year mark

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

How Alachua 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

Good-condition bridges (60)

FISH CAMP ROAD

US-441 SB (SR-25)

SR-121

SE 24TH AVE

I-75 SB (SR-93)

I-75 NB (SR-93)

I-75 SB (SR-93)

CR 2082

SW.18TH(WACAHOOTA)

NW 22ND STREET

DRIVE WAY

SW 20TH AVE

US-441 NB (SR-25)

I-75 SB SR-93

I-75 SB SR-93

I-75 SB SR-93

I-75 NB SR-93

I-75 NB (SR-93)

I-75 NB SR-93

I-75 NB SR-93

SR-26A

US-301 (SR-200)

NW 23RD AVE.C-3455

I-75 SB SR-93

NW 166TH AVENUE

SW 30TH AVE.

SR-26

SR-235

I-75 NB SR-93

SR-26

CR-235A

NE 21ST STREET

SR-20 EB

SR-20 WB

I-75 SB (SR-93)

I-75 NB (SR-93)

SR-222(NW 39TH AV)

US-301 SB (SR-200)

US-301 NB (SR-200)

SR-26

I-75 SB SR-93

NW 142ND AVE

SR-26

CR 1491

SR-20 EB

SR-20 WB

SR-20 WB

SR-20 EB

NW 156TH AVE

NE 31ST AVE

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