County profile · official public datasets

Orange County, FL

885 public highway bridges tracked in the FHWA National Bridge Inventory: 75.6% rated Good, 24.3% Fair, 0.1% Poor.

885
Public bridges: 75.6%
Good condition: 0.1%
Poor condition

The verdict

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

Orange County pairs a top-quartile lowest Poor-condition share among rated counties in the state with a newer average build year than the state inventory.

Top 18%
lowest Poor share in state: 0.1%
Poor-condition share: 885
public highway bridges: 1998
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.

Orange County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Orange County ranks #12 of 67 Florida counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0.1%). Orange County, Florida contains 885 public highway bridges. Roughly 75.6% are rated “Good,” 24.3% “Fair,” and 0.1% “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

885

Public highway bridges in Orange County

Good condition

75.6%

669 of 885 rated 7-9

Fair condition

24.3%

215 of 885 rated 5-6

Poor condition

0.1%

1 of 885 rated 4 or below

In-state Poor-share rank

#12 of 67

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

Condition distribution

Share of 885 NBI-tracked bridges by lowest applicable component rating.

Good

75.6% (669)

Fair

24.3% (215)

Poor

0.1% (1)

Orange County's Poor-condition bridges carry 19,250 vehicle crossings a day

That is 0.1% of the county's reported daily bridge traffic on 0.1% of its bridges: Poor-condition structures carry the same share of traffic than their share of the inventory. Each Poor bridge averages 19,250 crossings a day against 31,971 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 883 of 885 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

16.7% of Orange County's bridges have passed the 50-year mark

148 of the 885 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 75.6% 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

Conroy Road over I-4, built 2000, carries 19,250 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 19,250 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1920s

3
1930s

3
1940s

2
1950s

9
1960s

32
1970s

107
1980s

110
1990s

134
2000s

184
2010s

233
2020s

68

What this shows Construction peaked in the 2010s, when 233 of the county's bridges still in the inventory were built, which is 26.3% of those with a recorded year. That cohort is now 5 to 14 years old in the 2024 inventory. Its average build year is 1998, 15 years newer than the Florida average of 1983.

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

The 5 Florida counties nearest Orange County in number of bridges, with their condition splits. Its 0.1% Poor share is the 1st-lowest of these 6. Its average build year of 1998 against a peer-group mean of 1984 is 14 years newer.

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

Bridge inventory size and condition shares for Orange 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 (this page)	885	75.6%	24.3%	0.1%	1998
Hillsborough County	840	68.8%	31%	0.2%	1985
Duval County	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 Orange 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 Orange County, both outside Florida so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside FL (885 bridges here).

Milwaukee County, WI · 893 bridges
Cuyahoga County, OH · 871 bridges
Erie County, NY · 906 bridges
St. Louis County, MO · 912 bridges

Similar average build year

Nearest mean year-built outside FL (1998 here).

Collin County, TX · avg 1998 · 1,127 bridges
Fort Bend County, TX · avg 1998 · 795 bridges
Montgomery County, TX · avg 1998 · 710 bridges
Pipestone County, MN · avg 1998 · 185 bridges

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

All 885 Good 669 Fair 215 Poor 1

Fair-condition bridges (215)

Sort:

Orange County Bridge Snapshot

Condition distribution

Orange County's Poor-condition bridges carry 19,250 vehicle crossings a day

16.7% of Orange County's bridges have passed the 50-year mark

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

How Orange 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 (215)

SR-417 SB

SR-417 NB

SR-528

SR-408 WB

SR-417

SR-429 NB

I-4 EB

SR-417 SB

SR 91 TPK NB 274.1

SR-417 SB

Ramp G

SR-528 EB 31.9

SR-408 WB

SR-417 Ramp C2

SR-429 NB

SR-453 SB

I-4 WB

Innovation Way

Egret Way

SR-408

Elba Way

SR-520

SR 528 WB 1.9

SR-414

SR-528

SR-417 NB

SR-417 SB

SR 528 EB 0.9

SR-417 NB

SR-417

SR-50

SR-417 NB Ramp

SR-451 SB

Constantine Street

Buena Vista Drive

Chickasaw Trail

SR-408 WB

SR-408 EB

SR 528 WB 3.1

SR-417 NB

SR-429 SB

SR-429 NB

Riverside Dr

SR-417 SB

SR-417 NB

SR-536 WB

SR-451 NB Ramp

South Acess Rd.

I-4 WB

SR-528 WB 35.5

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