PR 1
Carrying PR 1 over PR 18 (LAS AMERICAS EXP)
6 KM S W OF RIO PIEDRAS, San Juan, Puerto Rico
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
PR 1 in San Juan, Puerto Rico is rated Poor in the FHWA's 2024 National Bridge Inventory.
Built in 1977, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 4. The lowest applicable rating sets the federal condition category, so this Poor result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure PR:012581
INTERSTATE-ERA · PRESTRESS · MULTI-SPAN · DECK-LED · HEAVY-ADT · STANDARD-LOAD · CAT-POOR
- INTERSTATE-ERA 1950–1979
- PRESTRESS Prestressed concrete
- MULTI-SPAN 3 spans
- DECK-LED Deck-led
- HEAVY-ADT Heavy ADT
- STANDARD-LOAD Standard load
- CAT-POOR Poor
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Structural health score
A composite of the deck, superstructure, and substructure NBI condition ratings plus the inventory load rating, benchmarked against the full national bridge corpus, distinct from the Good/Fair/Poor category above.
Bridge Snapshot: PR 1
The PR 1 bridge in San Juan, Puerto Rico carries PR 1 over PR 18 (LAS AMERICAS EXP). It was built in 1977, making it 49 years old today. The structure is built primarily of prestressed concrete and spans 3 sections, stretching 76.8 meters (252 feet) end to end. Daily traffic averages 45,500 vehicles, placing it in the heavily-trafficked tier of Puerto Rico bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection places the weakest component in poor condition (see the full component ratings below). A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed.
How PR 1 compares
Age against the county: built in 1977, earlier than 83 of San Juan's 202 bridges with a recorded construction year (41%), against a county median build year of 1977.
Live comparison across Puerto Rico bridges with a recorded inventory load rating (2,385 rated).
PR 1 vs every rated Puerto Rico bridge
Inventory load rating (metric tons), FHWA NBI, this state
30 Top 63% higher than 37% of 2,385 bridges
rated Puerto Rico bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
San Juan inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 202 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 1977
- Material
- Prestressed Concrete
- Number of Spans
- 3
- Structure Length
- 76.8 m (252 ft)
- Deck Width
- 14.4 m (47 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 45,500 vehicles/day
- Structure Number
- 012581
Condition Analysis
- • The deck (driving surface) rates poor at 4/9, with advanced deterioration recorded on the latest inspection.
- • At 7/9, the superstructure (beams and supports above the deck) is in good shape and shows no significant wear.
- • The substructure (piers and abutments) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
PR 1 is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare PR 1 against other structures in San Juan and across Puerto Rico. Puerto Rico bridges
- Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge
Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.
Frequently Asked Questions
What do the condition ratings mean for PR 1?
PR 1 in San Juan, Puerto Rico has a deck rating of 4/9, superstructure rating of 7/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is PR 1 inspected?
PR 1's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 45,500 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. PR 1 is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for PR 1?
PR 1 has an NBI inventory load rating of 29.7 metric tons.
Who is responsible for maintaining PR 1?
PR 1 is owned and maintained by State Highway Agency.
How old is PR 1 and does age affect safety?
PR 1 was built in 1977, making it 49 years old.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.