Total bridges
63
Public highway bridges in Guaynabo County
County profile · official public datasets
Guaynabo County, PR
63 public highway bridges tracked in the FHWA National Bridge Inventory: 28.6% rated Good, 61.9% Fair, 9.5% Poor.
- 63
- Public bridges
- 28.6%
- Good condition
- 9.5%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Guaynabo County pairs a top-quartile lowest Poor-condition share among rated counties in the state with a newer average build year than the state inventory.
- Top 20%
- lowest Poor share in state
- 9.5%
- Poor-condition share
- 63
- 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.
Guaynabo County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Guaynabo County ranks #15 of 74 Puerto Rico counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 9.5%). Guaynabo County, Puerto Rico contains 63 public highway bridges. Roughly 28.6% are rated “Good,” 61.9% “Fair,” and 9.5% “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
28.6%
18 of 63 rated 7-9
Fair condition
61.9%
39 of 63 rated 5-6
Poor condition
9.5%
6 of 63 rated 4 or below
In-state Poor-share rank
#15 of 74
Among Puerto Rico counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 63 NBI-tracked bridges by lowest applicable component rating.
Good 28.6% (18)
Fair 61.9% (39)
Poor 9.5% (6)
Guaynabo County's Poor-condition bridges carry 172,600 vehicle crossings a day
That is 8.6% of the county's reported daily bridge traffic on 9.5% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 28,767 crossings a day against 18,363 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 63 of 63 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
33.3% of Guaynabo County's bridges have passed the 50-year mark
21 of the 63 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 28.6% 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 60.5% of the county's Poor-condition bridge traffic
PR 22 over PR 28, built 1971, carries 104,500 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 6-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 172,600 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Guaynabo County's bridges were built
63 bridges with a recorded construction year, grouped by decade
- 1920s 1
1920–1929
1 bridges
- 1930s 2
1930–1939
2 bridges
- 1940s 2
1940–1949
2 bridges
- 1950s 4
1950–1959
4 bridges
- 1960s
1960–1969
9 bridges
- 1970s
1970–1979
8 bridges
- 1980s
1980–1989
14 bridges
- 1990s
1990–1999
8 bridges
- 2000s
2000–2009
12 bridges
- 2010s 3
2010–2019
3 bridges
What this shows Construction peaked in the 1980s, when 14 of the county's bridges still in the inventory were built, which is 22.2% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year is 1981, 7 years newer than the Puerto Rico average of 1974.
How Guaynabo County compares with Puerto Rico's closest counties by inventory size
The 5 Puerto Rico counties nearest Guaynabo County in number of bridges, with their condition splits. Its 9.5% Poor share is the 1st-lowest of these 6. Its average build year of 1981 against a peer-group mean of 1974 is 7 years newer.
Showing the 5 closest of 73 Puerto Rico counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Carolina County | 73 | 28.8% | 60.3% | 11% | 1983 |
| Humacao County | 69 | 26.1% | 60.9% | 13% | 1985 |
| Guaynabo County (this page) | 63 | 28.6% | 61.9% | 9.5% | 1981 |
| Utuado County | 57 | 12.3% | 66.7% | 21.1% | 1961 |
| Juana Díaz County | 55 | 9.1% | 72.7% | 18.2% | 1970 |
| Arecibo County | 51 | 3.9% | 78.4% | 17.6% | 1971 |
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 Guaynabo 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 Guaynabo County, both outside Puerto Rico so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside PR (63 bridges here).
- Highlands County, FL · 63 bridges
- Chattahoochee County, GA · 63 bridges
- Red River County, LA · 63 bridges
- Lincoln County, ME · 63 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.
All bridges (63)
PR 838
GoodOver: UNNAMED CREEK
1 KM N E INT PR199 &, Guaynabo, PR
Built 1988 Load: 50.0 t ADT: 11,581
STREET 2 KM 2.66
GoodOver: AVE. EXP LA MUDA MAMEY
2.7 KM S of PR 169, Guaynabo, PR
Built 2002 Load: 51.2 t ADT: 4,900
Ramp
GoodOver: Waterway
3.52km SE Guaynabo, Guaynabo, PR
Built 2011 Load: 58.5 t ADT: 500
PR 880
GoodOver: RAILROAD
0.6 MT FROM PR 2 AT 7.5, Guaynabo, PR
Built 2000 Load: 64.0 t ADT: 5,300
PR 20 KM 9.5
GoodOver: PR 1 KM 21.3
0.4 KM S INT PR 1 PR 837, Guaynabo, PR
Built 2000 Load: 70.5 t ADT: 34,900
PR 23
GoodOver: MARGARITA CREEK
CAPARRA INTERCHANGE, Guaynabo, PR
Built 1964 Load: 86.3 t ADT: 29,700
OFF PR 834
GoodOver: DON VARO CREEK
0.20 KM. OF PR 834, Guaynabo, PR
Built 1999 Load: 94.1 t ADT: 500
PR 165
PoorOver: PR 24
1.6 KM S E OF CATA¥O, Guaynabo, PR
Built 1972 Load: 16.3 t ADT: 51,200
PR 7793
PoorOver: DON BARO CREEK
4 KM N W OF AGUAS BUENAS, Guaynabo, PR
Built 1979 Load: 21.6 t ADT: 500
PR 833
PoorOver: GUAYNABO RIVER
4 KM NORTH OF INT PR 837, Guaynabo, PR
Built 1985 Load: 38.2 t ADT: 3,100
PR 22
PoorOver: PR 28
2.2 KM SOUTH OF CATA&, Guaynabo, PR
Built 1971 Load: 44.8 t ADT: 104,500
2ND STREET
PoorOver: STREAM
FORMER 834 KM 4.8, Guaynabo, PR
Built 2001 Load: 47.3 t ADT: 100
PR 28
PoorOver: PR 2
5 KMS. SOUTH OF SAN JUAN, Guaynabo, PR
Built 2000 Load: 52.4 t ADT: 13,200
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.