County profile · official public datasets

Juana Díaz County, PR

55 public highway bridges tracked in the FHWA National Bridge Inventory: 9.1% rated Good, 72.7% Fair, 18.2% Poor.

55
Public bridges: 9.1%
Good condition: 18.2%
Poor condition

The verdict

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

Juana Díaz County posts a higher-than-median Poor-condition share among rated counties in the state across rated county bridge inventory.

50th
of 74 on Poor share: 18.2%
Poor-condition share: 55
public highway bridges: 1970
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.

Juana Díaz County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Juana Díaz County ranks #50 of 74 Puerto Rico counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 18.2%). Juana Díaz County, Puerto Rico contains 55 public highway bridges. Roughly 9.1% are rated “Good,” 72.7% “Fair,” and 18.2% “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

Public highway bridges in Juana Díaz County

Good condition

9.1%

5 of 55 rated 7-9

Fair condition

72.7%

40 of 55 rated 5-6

Poor condition

18.2%

10 of 55 rated 4 or below

In-state Poor-share rank

#50 of 74

Among Puerto Rico counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 55 NBI-tracked bridges by lowest applicable component rating.

Good

9.1% (5)

Fair

72.7% (40)

Poor

18.2% (10)

Juana Díaz County's Poor-condition bridges carry 195,650 vehicle crossings a day

That is 17.3% of the county's reported daily bridge traffic on 18.2% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 19,565 crossings a day against 7,980 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 55 of 55 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

76.4% of Juana Díaz County's bridges have passed the 50-year mark

42 of the 55 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 9.1% 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 23.2% of the county's Poor-condition bridge traffic

PR 52 NORTHBOUND over JACAGUAS RIVER, built 1970, carries 45,400 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 195,650 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1900s

3
1920s

2
1940s

1
1950s

1
1960s

2
1970s

34
1980s

2
1990s

4
2000s

5
2010s

1

What this shows Construction peaked in the 1970s, when 34 of the county's bridges still in the inventory were built, which is 61.8% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year (1970) matches the Puerto Rico average (1974).

How Juana Díaz County compares with Puerto Rico's closest counties by inventory size

The 5 Puerto Rico counties nearest Juana Díaz County in number of bridges, with their condition splits. Its 18.2% Poor share is the 5th-lowest of these 6. Its average build year of 1970 against a peer-group mean of 1973 is in line with the group.

Showing the 5 closest of 73 Puerto Rico counties eligible for comparison.

Bridge inventory size and condition shares for Juana Díaz County and the 5 Puerto Rico counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Guaynabo County	63	28.6%	61.9%	9.5%	1981
Utuado County	57	12.3%	66.7%	21.1%	1961
Juana Díaz County (this page)	55	9.1%	72.7%	18.2%	1970
Arecibo County	51	3.9%	78.4%	17.6%	1971
Naguabo County	51	23.5%	66.7%	9.8%	1982
San Lorenzo County	51	15.7%	68.6%	15.7%	1970

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 Juana Díaz 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 Juana Díaz County, both outside Puerto Rico so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside PR (55 bridges here).

Park County, CO · 55 bridges
Dixie County, FL · 55 bridges
Winnebago County, IA · 55 bridges
Logan County, KS · 55 bridges

Similar average build year

Nearest mean year-built outside PR (1970 here).

Hamilton County, OH · avg 1970 · 783 bridges
Yavapai County, AZ · avg 1970 · 543 bridges
Garfield County, OK · avg 1970 · 504 bridges
San Luis Obispo County, CA · avg 1970 · 401 bridges

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

All 55 Good 5 Fair 40 Poor 10

All bridges (55)

Sort:

Juana Díaz County Bridge Snapshot

Condition distribution

Juana Díaz County's Poor-condition bridges carry 195,650 vehicle crossings a day

76.4% of Juana Díaz County's bridges have passed the 50-year mark

One structure carries 23.2% of the county's Poor-condition bridge traffic

How Juana Díaz County compares with Puerto Rico's closest counties by inventory size

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

All bridges (55)

PR 52 NORTHBOUND

PR 512

PR 5513

PR 510

PR 512

PR 149

PR 1

PR 52

PR 14

PR 510

PR 52 NORTHBOUND

PR 52 SOUTHBOUND

PR 52 SOUTHBOUND

PR 52 NORTHBOUND

CALLE 6

PR 535

PR 52 SOUTHBOUND

PR 510

PR 52 NORTHBOUND

PR 52 SOUTHBOUND

PR 52 NORTHBOUND

PR 52 SOUTHBOUND

PR 52 NORTHBOUND

PR 52 SOUTHBOUND

PR 52 NORTHBOUND

PR 52 SOUTHBOUND

PR 52 NORTHBOUND

PR 52 SOUTHBOUND

PR 52 NORTHBOUND

PR 52 SOUTHBOUND

PR 535

PR 52 SOUTHBOUND

PR 52 NORTHBOUND

PR 52 SOUTHBOUND

PR 52 NORTHBOUND

PR 513

PR 52 SOUTHBOUND

PR 52 NORTHBOUND

PR 512

PR 1

VILLAS DEL PRADO

PR 509

OFF PR 149

CALLE 3

PR 540

OFF PR 512 KM 4.3

OFF PR 535

CALLE 5

PR 52 SOUTHBOUND

PR 1

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