Total bridges
34
Public highway bridges in Guayanilla County
County profile · official public datasets
Guayanilla County, PR
34 public highway bridges tracked in the FHWA National Bridge Inventory: 5.9% rated Good, 73.5% Fair, 20.6% Poor.
- 34
- Public bridges
- 5.9%
- Good condition
- 20.6%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Guayanilla County posts a higher-than-median Poor-condition share among rated counties in the state across rated county bridge inventory.
- 59th
- of 74 on Poor share
- 20.6%
- Poor-condition share
- 34
- public highway bridges
- 1974
- 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.
Guayanilla County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Guayanilla County ranks #59 of 74 Puerto Rico counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 20.6%). Guayanilla County, Puerto Rico contains 34 public highway bridges. Roughly 5.9% are rated “Good,” 73.5% “Fair,” and 20.6% “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
5.9%
2 of 34 rated 7-9
Fair condition
73.5%
25 of 34 rated 5-6
Poor condition
20.6%
7 of 34 rated 4 or below
In-state Poor-share rank
#59 of 74
Among Puerto Rico counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 34 NBI-tracked bridges by lowest applicable component rating.
Good 5.9% (2)
Fair 73.5% (25)
Poor 20.6% (7)
Guayanilla County's Poor-condition bridges carry 22,850 vehicle crossings a day
That is 11% of the county's reported daily bridge traffic on 20.6% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 3,264 crossings a day against 18,700 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 34 of 34 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
61.8% of Guayanilla County's bridges have passed the 50-year mark
21 of the 34 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 5.9% 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 82.5% of the county's Poor-condition bridge traffic
PR 2 EASTBOUND over GUAYANILLA RIVER L ROAD, built 1970, carries 18,850 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 7-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 22,850 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Guayanilla County's bridges were built
34 bridges with a recorded construction year, grouped by decade
- 1920s 1
1920–1929
1 bridges
- 1950s
1950–1959
6 bridges
- 1960s
1960–1969
8 bridges
- 1970s
1970–1979
8 bridges
- 1980s
1980–1989
5 bridges
- 1990s 2
1990–1999
2 bridges
- 2000s 3
2000–2009
3 bridges
- 2010s 1
2010–2019
1 bridges
What this shows Construction peaked in the 1960s, when 8 of the county's bridges still in the inventory were built, which is 23.5% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1974) matches the Puerto Rico average (1974).
How Guayanilla County compares with Puerto Rico's closest counties by inventory size
The 5 Puerto Rico counties nearest Guayanilla County in number of bridges, with their condition splits. Its 20.6% Poor share is the 6th-lowest of these 6. Its average build year of 1974 against a peer-group mean of 1968 is 6 years newer.
Showing the 5 closest of 73 Puerto Rico counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Jayuya County | 34 | 5.9% | 76.5% | 17.6% | 1964 |
| Guayanilla County (this page) | 34 | 5.9% | 73.5% | 20.6% | 1974 |
| Adjuntas County | 33 | 9.1% | 75.8% | 15.2% | 1960 |
| Patillas County | 32 | 21.9% | 59.4% | 18.8% | 1970 |
| San Sebastián County | 31 | 16.1% | 74.2% | 9.7% | 1966 |
| Canóvanas County | 30 | 36.7% | 46.7% | 16.7% | 1979 |
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 Guayanilla 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 Guayanilla County, both outside Puerto Rico so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside PR (34 bridges here).
- Bear Lake County, ID · 34 bridges
- Plaquemines County, LA · 34 bridges
- Golden Valley County, ND · 34 bridges
- Day County, SD · 34 bridges
Similar average build year
Nearest mean year-built outside PR (1974 here).
- Knox County, TN · avg 1974 · 588 bridges
- Summit County, OH · avg 1974 · 563 bridges
- Onondaga County, NY · avg 1974 · 472 bridges
- Orange County, NY · avg 1974 · 472 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Poor-condition bridges (7)
RURAL LOCAL ROAD
PoorOver: YAUCO RIVER
5 KM S W OF GUAYANILLA, Guayanilla, PR
Built 1950 Load: 0.0 t ADT: 100
OFF PR 378 KM 4.8
PoorOver: GUAYANILLA RIVER
40 MT OFF PR378 AT KM 4.8, Guayanilla, PR
Built 1979 Load: 8.9 t ADT: 150
PR 336
PoorOver: LA MANUELA CREEK
2 KM S E OF GUAYANILLA, Guayanilla, PR
Built 1955 Load: 22.2 t ADT: 3,100
PR 378
PoorOver: GUAYANILLA RIVER
9 KM NORTH OF GUAYANILLA, Guayanilla, PR
Built 1958 Load: 27.4 t ADT: 400
PR 2 EASTBOUND
PoorOver: GUAYANILLA RIVER L ROAD
2.5 KM N W OF GUAYANILLA, Guayanilla, PR
Built 1970 Load: 28.1 t ADT: 18,850
OFF PR 378 KM 3.8
PoorOver: GUAYANILLA RIVER
6 KM NORTH OF GUAYANILLA, Guayanilla, PR
Built 1977 Load: 31.0 t ADT: 150
OFF PR 377
PoorOver: CONSEJO CREEK
2 KM N W OF GUAYANILLA, Guayanilla, PR
Built 1984 Load: 31.7 t ADT: 100
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.