County profile · official public datasets

Duval County, FL

831 public highway bridges tracked in the FHWA National Bridge Inventory: 63.7% rated Good, 34.5% Fair, 1.8% Poor.

831
Public bridges: 63.7%
Good condition: 1.8%
Poor condition

The verdict

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

Duval County posts a better-than-median Poor-condition share among rated counties in the state across large county bridge inventory.

Top 42%
lowest Poor share in state: 1.8%
Poor-condition share: 831
public highway bridges: 1984
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.

Duval County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Duval County ranks #28 of 67 Florida counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 1.8%). Duval County, Florida contains 831 public highway bridges. Roughly 63.7% are rated “Good,” 34.5% “Fair,” and 1.8% “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

831

Public highway bridges in Duval County

Good condition

63.7%

529 of 831 rated 7-9

Fair condition

34.5%

287 of 831 rated 5-6

Poor condition

1.8%

15 of 831 rated 4 or below

In-state Poor-share rank

#28 of 67

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

Condition distribution

Share of 831 NBI-tracked bridges by lowest applicable component rating.

Good

63.7% (529)

Fair

34.5% (287)

Poor

1.8% (15)

Duval County's Poor-condition bridges carry 537,294 vehicle crossings a day

That is 2.1% of the county's reported daily bridge traffic on 1.8% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 35,820 crossings a day against 30,286 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 831 of 831 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

41.8% of Duval County's bridges have passed the 50-year mark

347 of the 831 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 63.7% 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 23.5% of the county's Poor-condition bridge traffic

I-95 (SR-9) over 13th ST., built 1959, carries 126,500 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 15-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 537,294 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1920s

10
1930s

13
1940s

9
1950s

71
1960s

184
1970s

130
1980s

54
1990s

84
2000s

135
2010s

107
2020s

34

What this shows Construction peaked in the 1960s, when 184 of the county's bridges still in the inventory were built, which is 22.1% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1984) matches the Florida average (1983).

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

The 5 Florida counties nearest Duval County in number of bridges, with their condition splits. Its 1.8% Poor share is the 4th-lowest of these 6. Its average build year of 1984 against a peer-group mean of 1986 is in line with the group.

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

Bridge inventory size and condition shares for Duval County and the 5 Florida counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Miami-Dade County	1,057	69.5%	25.7%	4.7%	1980
Orange County	885	75.6%	24.3%	0.1%	1998
Hillsborough County	840	68.8%	31%	0.2%	1985
Duval County (this page)	831	63.7%	34.5%	1.8%	1984
Broward County	686	69.2%	28.9%	1.9%	1982
Palm Beach County	610	79.7%	20%	0.3%	1987

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

Similar inventory size

Nearest county inventories outside FL (831 bridges here).

Davidson County, TN · 832 bridges
Montgomery County, PA · 828 bridges
Middlesex County, MA · 818 bridges
Lancaster County, PA · 801 bridges

Similar average build year

Nearest mean year-built outside FL (1984 here).

Hennepin County, MN · avg 1984 · 936 bridges
El Paso County, CO · avg 1984 · 686 bridges
Bell County, TX · avg 1984 · 660 bridges
Steuben County, NY · avg 1984 · 627 bridges

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

All 831 Good 529 Fair 287 Poor 15

Fair-condition bridges (287)

Sort:

Duval County Bridge Snapshot

Condition distribution

Duval County's Poor-condition bridges carry 537,294 vehicle crossings a day

41.8% of Duval County's bridges have passed the 50-year mark

One structure carries 23.5% of the county's Poor-condition bridge traffic

How Duval 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

Fair-condition bridges (287)

SR-105

SR-13 NB

SR-21

I-95 (SR-9)

SR-10A

BLOUNT ISLAND BLVD

I-95 NB (SR-9)

ARLINGTON RD SOUTH

TROUT RIVER BLVD

US-1 SB (SR-15)

I-95 (SR-9)

I-295(9A) DAMES PT

SR-211

I-10EB TO I-295 NB

TROUT RIVER BLVD.

ALTA DRIVE

SR-115 SB

PLAZA GATE LANE

SR-109(UNIVERSITY)

SR-115 NB

SR-115 NB

I-295 NB (SR-9A)

SR-202 WB (JTB)

SR-10

I-295 SB (SR-9A)

I-295 NB (SR-9A)

SR-13 SB

GARDEN STREET

SR-10

PEARL STREET

I-295 SB (BUCKMAN)

I-295 NB (BUCKMAN)

I-295 NB (SR-9A)

SR-10 EB TO A1A NB

I-295 SB (SR-9A)

I-295 NB (SR-9A)

US-1 SB (SR-15)

US-ALT-1 (SR-115)

I-295 NB (SR-9A)

I-95 NB (SR-9)

SR-10 E.B.

SR-228

US-1 (SR-5)

I-10 EB (SR-8)

BROWARD ROAD

HARTS ROAD

SR-13

I-295 NB TO SR-228

SR-A1A

I-95 (SR-9)

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