County profile · official public datasets

Santa Rosa County, FL

192 public highway bridges tracked in the FHWA National Bridge Inventory: 29.2% rated Good, 65.6% Fair, 5.2% Poor.

192
Public bridges: 29.2%
Good condition: 5.2%
Poor condition

The verdict

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

Santa Rosa County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.

49th
of 67 on Poor share: 5.2%
Poor-condition share: 192
public highway bridges: 1986
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.

Santa Rosa County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Santa Rosa County ranks #49 of 67 Florida counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 5.2%). Santa Rosa County, Florida contains 192 public highway bridges. Roughly 29.2% are rated “Good,” 65.6% “Fair,” and 5.2% “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

192

Public highway bridges in Santa Rosa County

Good condition

29.2%

56 of 192 rated 7-9

Fair condition

65.6%

126 of 192 rated 5-6

Poor condition

5.2%

10 of 192 rated 4 or below

In-state Poor-share rank

#49 of 67

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

Condition distribution

Share of 192 NBI-tracked bridges by lowest applicable component rating.

Good

29.2% (56)

Fair

65.6% (126)

Poor

5.2% (10)

Santa Rosa County's Poor-condition bridges carry 32,700 vehicle crossings a day

That is 2.9% of the county's reported daily bridge traffic on 5.2% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 3,270 crossings a day against 5,244 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 192 of 192 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

32.3% of Santa Rosa County's bridges have passed the 50-year mark

62 of the 192 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 29.2% 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 63.5% of the county's Poor-condition bridge traffic

US90 SR10 over White River, built 1970, carries 20,750 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 10-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 32,700 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1900s

8
1940s

2
1950s

14
1960s

32
1970s

10
1980s

16
1990s

44
2000s

33
2010s

28
2020s

5

What this shows Construction peaked in the 1990s, when 44 of the county's bridges still in the inventory were built, which is 22.9% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year (1986) matches the Florida average (1983).

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

The 5 Florida counties nearest Santa Rosa County in number of bridges, with their condition splits. Its 5.2% Poor share is the 4th-lowest of these 6. Its average build year of 1986 against a peer-group mean of 1989 is in line with the group.

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

Bridge inventory size and condition shares for Santa Rosa County and the 5 Florida counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Okaloosa County	218	38.1%	56.4%	5.5%	1989
Charlotte County	211	66.4%	33.6%	0%	1987
Santa Rosa County (this page)	192	29.2%	65.6%	5.2%	1986
Seminole County	177	82.5%	16.9%	0.6%	2000
Leon County	165	35.8%	60%	4.2%	1981
Holmes County	156	30.8%	51.3%	17.9%	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 Santa Rosa 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 Santa Rosa County, both outside Florida so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside FL (192 bridges here).

Barbour County, AL · 192 bridges
El Dorado County, CA · 192 bridges
Santa Cruz County, CA · 192 bridges
Morgan County, CO · 192 bridges

Similar average build year

Nearest mean year-built outside FL (1986 here).

El Paso County, TX · avg 1986 · 783 bridges
Caddo County, LA · avg 1986 · 682 bridges
Weld County, CO · avg 1986 · 614 bridges
Polk County, IA · avg 1986 · 545 bridges

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

All 192 Good 56 Fair 126 Poor 10

Fair-condition bridges (126)

Sort:

Santa Rosa County Bridge Snapshot

Condition distribution

Santa Rosa County's Poor-condition bridges carry 32,700 vehicle crossings a day

32.3% of Santa Rosa County's bridges have passed the 50-year mark

One structure carries 63.5% of the county's Poor-condition bridge traffic

How Santa Rosa 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 (126)

CR 399

Deaton Bridge Road

CR 89

Winding Shore Dr

SR281

CR 191

SR87

Sellersville Rd

US90 SR10

Mason West Road

San Rapheal Road

US90 SR10

US90 SR10

US90 SR10

CR 191

SR399

SR4

I10 SR8

CR 184

CR 178

SR87

Friendship Road

US90 SR10

I10 SR8

Al Rice Road

CR 87A

CR 191

SR4

Alderbrook Blvd

SR4

Overstreet Road

CR399/Country Mill

Krul Lake Road

Norman Riley Road

CR191C

SR4

CR184A

US90 SR10

Bracken Road

SR87

RANGE ROAD 735

CR 178

Robinson Pt Road

I10 SR8

SR4

Springhill Road

Boat Ramp Road

SR87

CR 399

I10 SR8

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