Pr 20 over Pr 21

Good

San Juan Municipio, Puerto Rico · 2.3 KM North of Guaynabo · Structure no. 023771

Built: 1997; 28 years old
Condition: Good; inspected February 2023
Type: Stringer/Multi-beam or Girder; Prestressed Concrete
Length: 94 ft; 1 main span
Daily traffic: 38,400; 2017 count
Owner: Toll Authority; State Toll Authority

About this bridge

Pr 20 over Pr 21 is a prestressed concrete stringer/multi-beam or girder carrying Pr 20 over Pr 21 in San Juan Municipio, Puerto Rico. It was built in 1997, so it is 28 years old, younger than the Puerto Rico average of 51.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 38,400 vehicles a day, projected to reach 48,400 by 2025. The structure is 94 ft (28.7 m) long and 83 ft wide.

Location

No coordinates are recorded for this structure.

CarriesPr 20

CrossesPr 21

Location2.3 KM North of Guaynabo

RouteState Highway 20

CountySan Juan Municipio

StatePuerto Rico

Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

Component	Rating	Meaning
Deck	7 Good	Some minor problems.
Superstructure	7 Good	Some minor problems.
Substructure	8 Very Good	No problems noted.

Last inspectionFebruary 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourBridge not over waterway

Structural evaluation7: Better than present minimum criteria

Deck geometry2: Basically intolerable, requiring high priority of replacement

Approach roadway alignment8: Equal to present desirable criteria

Operating rating94.5 US tons

Inventory rating56.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder

MaterialPrestressed Concrete

DeckConcrete, cast-in-place

Main spans1

Design loadHS 20

Structure length94 ft (28.7 m)

Longest span87 ft (26.5 m)

Deck width83 ft (25.2 m)

Roadway width77 ft (23.5 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,400 (2017)

Projected traffic48,400 by 2025

Trucks0%

Lanes on structure6

Traffic directionTwo-way traffic

CarriesHighway

CrossesHighway

Detour if closed—

TollOn a free road

National Highway SystemYes

Ownership and planned work

OwnerState Toll Authority

Maintained byState Toll Authority

Historic statusNot eligible for the National Register of Historic Places

Work proposedNone recorded

Estimated improvement cost—

NavigationNot applicable (no waterway)

Frequently asked questions

When was Pr 20 over Pr 21 built?

It was built in 1997, making it 28 years old in 2025.

What condition is Pr 20 over Pr 21 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2023.

How much traffic does Pr 20 over Pr 21 carry?

About 38,400 vehicles per day (2017 count).

How long is Pr 20 over Pr 21?

The structure is 94 ft (28.7 m) long with a longest span of 87 ft (26.5 m) and a deck 83 ft wide.

Who owns Pr 20 over Pr 21?

It is owned by the State Toll Authority.