Total bridges
17
Public highway bridges in Toa Alta County
County profile · official public datasets
Toa Alta County, PR
17 public highway bridges tracked in the FHWA National Bridge Inventory: 41.2% rated Good, 47.1% Fair, 11.8% Poor.
- 17
- Public bridges
- 41.2%
- Good condition
- 11.8%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Toa Alta County pairs a better-than-median Poor-condition share among rated counties in the state with a newer average build year than the state inventory.
- Top 38%
- lowest Poor share in state
- 11.8%
- Poor-condition share
- 17
- public highway bridges
- 1981
- 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.
Toa Alta County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Toa Alta County ranks #28 of 74 Puerto Rico counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 11.8%). Toa Alta County, Puerto Rico contains 17 public highway bridges. Roughly 41.2% are rated “Good,” 47.1% “Fair,” and 11.8% “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.
Good condition
41.2%
7 of 17 rated 7-9
Fair condition
47.1%
8 of 17 rated 5-6
Poor condition
11.8%
2 of 17 rated 4 or below
In-state Poor-share rank
#28 of 74
Among Puerto Rico counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 17 NBI-tracked bridges by lowest applicable component rating.
Good 41.2% (7)
Fair 47.1% (8)
Poor 11.8% (2)
Toa Alta County's Poor-condition bridges carry 46,100 vehicle crossings a day
That is 32.2% of the county's reported daily bridge traffic on 11.8% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 23,050 crossings a day against 6,529 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 17 of 17 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
41.2% of Toa Alta County's bridges have passed the 50-year mark
7 of the 17 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 41.2% 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 68.8% of the county's Poor-condition bridge traffic
PR 165 over LAJAS RIVER, built 1978, carries 31,700 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 46,100 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Toa Alta County's bridges were built
17 bridges with a recorded construction year, grouped by decade
- 1940s
1940–1949
2 bridges
- 1950s
1950–1959
2 bridges
- 1960s
1960–1969
2 bridges
- 1970s
1970–1979
3 bridges
- 1980s 1
1980–1989
1 bridges
- 1990s 1
1990–1999
1 bridges
- 2000s
2000–2009
3 bridges
- 2010s
2010–2019
3 bridges
What this shows Construction peaked in the 1970s, when 3 of the county's bridges still in the inventory were built, which is 17.6% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year is 1981, 7 years newer than the Puerto Rico average of 1974.
How Toa Alta County compares with Puerto Rico's closest counties by inventory size
The 5 Puerto Rico counties nearest Toa Alta County in number of bridges, with their condition splits. Its 11.8% Poor share is the 4th-lowest of these 6. Its average build year of 1981 against a peer-group mean of 1972 is 9 years newer.
Showing the 5 closest of 73 Puerto Rico counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Ciales County | 18 | 11.1% | 72.2% | 16.7% | 1951 |
| Hormigueros County | 17 | 29.4% | 58.8% | 11.8% | 1990 |
| Toa Alta County (this page) | 17 | 41.2% | 47.1% | 11.8% | 1981 |
| Cataño County | 16 | 6.3% | 81.3% | 12.5% | 1970 |
| Comerío County | 16 | 25% | 75% | 0% | 1980 |
| Lares County | 16 | 12.5% | 81.3% | 6.3% | 1968 |
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 Toa Alta 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 Toa Alta County, both outside Puerto Rico so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside PR (17 bridges here).
- Lake County, CO · 17 bridges
- Morton County, KS · 17 bridges
- Big Stone County, MN · 17 bridges
- Golden Valley County, MT · 17 bridges
Similar average build year
Nearest mean year-built outside PR (1981 here).
- Franklin County, OH · avg 1981 · 922 bridges
- Greenville County, SC · avg 1981 · 635 bridges
- Montgomery County, OH · avg 1981 · 632 bridges
- McLean County, IL · avg 1981 · 624 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (8)
PROVIDENCIA AVENUE
FairOver: ESCARCHA CREEK
2 KM SOUTH OF PR 861, Toa Alta, PR
Built 1987 Load: 13.7 t ADT: 800
PR 819
FairOver: BUCARABONES RIVER
3 KM EAST OF TOA ALTA, Toa Alta, PR
Built 1970 Load: 23.2 t ADT: 10,700
PR 823
FairOver: UNNAMED CREEK
5 KM S W OF TOA ALTA, Toa Alta, PR
Built 1945 Load: 29.6 t ADT: 600
PR 824
FairOver: LA PLATA RIVER
1.7 KM SOUTH OF TOA ALTA, Toa Alta, PR
Built 1951 Load: 36.1 t ADT: 8,700
PR 824
FairOver: CRUZ CREEK
4 KM SOUTH OF TOA ALTA, Toa Alta, PR
Built 1942 Load: 43.6 t ADT: 6,500
PR 861
FairOver: WATERWAY
4.67 KM. S.E. OF TOA ALTA, Toa Alta, PR
Built 2012 Load: 53.7 t ADT: 21,000
PR 823
FairOver: UNNAMED CREEK
3.5 KM N E OF COROZAL, Toa Alta, PR
Built 1950 Load: 71.8 t ADT: 600
PR 827
FairOver: CANCEL CREEK
9 KM S E OF TOA ALTA, Toa Alta, PR
Built 1967 Load: 99.9 t ADT: 2,600
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.