County profile · official public datasets

Las Piedras County, PR

24 public highway bridges tracked in the FHWA National Bridge Inventory: 8.3% rated Good, 83.3% Fair, 8.3% Poor.

24
Public bridges: 8.3%
Good condition: 8.3%
Poor condition

The verdict

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

Las Piedras County posts a top-quartile lowest Poor-condition share among rated counties in the state across rated county bridge inventory.

Top 18%
lowest Poor share in state: 8.3%
Poor-condition share: 24
public highway bridges: 1975
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.

Las Piedras County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Las Piedras County ranks #13 of 74 Puerto Rico counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 8.3%). Las Piedras County, Puerto Rico contains 24 public highway bridges. Roughly 8.3% are rated “Good,” 83.3% “Fair,” and 8.3% “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 Las Piedras County

Good condition

8.3%

2 of 24 rated 7-9

Fair condition

83.3%

20 of 24 rated 5-6

Poor condition

8.3%

2 of 24 rated 4 or below

In-state Poor-share rank

#13 of 74

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

Condition distribution

Share of 24 NBI-tracked bridges by lowest applicable component rating.

Good

8.3% (2)

Fair

83.3% (20)

Poor

8.3% (2)

Las Piedras County's Poor-condition bridges carry 91,050 vehicle crossings a day

That is 30.9% of the county's reported daily bridge traffic on 8.3% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 45,525 crossings a day against 7,950 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 24 of 24 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

58.3% of Las Piedras County's bridges have passed the 50-year mark

14 of the 24 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 8.3% 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 66.7% of the county's Poor-condition bridge traffic

PR 30 EASTBOUND over HUMACAO RIVER, built 1964, carries 60,700 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 2-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 91,050 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1930s

1
1940s

1
1950s

2
1960s

10
1970s

1
1980s

2
1990s

4
2000s

2
2010s

1

What this shows Construction peaked in the 1960s, when 10 of the county's bridges still in the inventory were built, which is 41.7% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1975) matches the Puerto Rico average (1974).

How Las Piedras County compares with Puerto Rico's closest counties by inventory size

The 5 Puerto Rico counties nearest Las Piedras County in number of bridges, with their condition splits. Its 8.3% Poor share is the 2nd-lowest of these 6. Its average build year of 1975 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 Las Piedras County and the 5 Puerto Rico counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Guánica County	25	12%	84%	4%	1979
Peñuelas County	25	16%	72%	12%	1975
Villalba County	25	24%	56%	20%	1976
Las Piedras County (this page)	24	8.3%	83.3%	8.3%	1975
Vega Baja County	23	13%	69.6%	17.4%	1976
Añasco County	22	13.6%	72.7%	13.6%	1959

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

Similar inventory size

Nearest county inventories outside PR (24 bridges here).

Meade County, KY · 24 bridges
Robertson County, KY · 24 bridges
Garfield County, NE · 24 bridges
De Baca County, NM · 24 bridges

Similar average build year

Nearest mean year-built outside PR (1975 here).

San Bernardino County, CA · avg 1975 · 1,422 bridges
Lane County, OR · avg 1975 · 1,010 bridges
Fulton County, GA · avg 1975 · 775 bridges
Westmoreland County, PA · avg 1975 · 620 bridges

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

All 24 Good 2 Fair 20 Poor 2

Fair-condition bridges (20)

Sort:

Las Piedras County Bridge Snapshot

Condition distribution

Las Piedras County's Poor-condition bridges carry 91,050 vehicle crossings a day

58.3% of Las Piedras County's bridges have passed the 50-year mark

One structure carries 66.7% of the county's Poor-condition bridge traffic

How Las Piedras 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

Fair-condition bridges (20)

PR 948

PR 9936

PR 921

OFF PR 9921

PR 9921

PR 183

PR 921

PR 31

PR 917

PR 9937

OFFPR 9921 km 1.65

URBAN LOCAL ROAD

PR 936

OFF PR 948 @ K2.1

PR 31

PR 9936

OFF PR 9921 km1.2

PR 30 WESTBOUND

PR 30 EASTBOUND

PR 204

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