US Bridges

Pr 1 15.1 KM over Pr 52

Poor

San Juan Municipio, Puerto Rico · 6 KM S W of Rio Piedras · Structure no. 012581

Built
1977
48 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
252 ft
3 main spans
Daily traffic
45,500
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 1 15.1 KM over Pr 52 is a prestressed concrete stringer/multi-beam or girder carrying Pr 1 15.1 KM over Pr 52 in San Juan Municipio, Puerto Rico. It was built in 1977, so it is 48 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 45,500 vehicles a day, roughly 4% of them trucks, projected to reach 53,200 by 2025. The structure is 252 ft (76.8 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesPr 1 15.1 KM
CrossesPr 52
Location6 KM S W of Rio Piedras
RouteState Highway 1
CountySan Juan Municipio
StatePuerto Rico
Coordinates18.37737, -66.0719
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.7 US tons
Inventory rating32.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length252 ft (76.8 m)
Longest span99 ft (30.2 m)
Deck width47 ft (14.4 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45,500 (2017)
Projected traffic53,200 by 2025
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pr 1 15.1 KM over Pr 52 built?

It was built in 1977, making it 48 years old in 2025.

What condition is Pr 1 15.1 KM over Pr 52 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

How much traffic does Pr 1 15.1 KM over Pr 52 carry?

About 45,500 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Pr 1 15.1 KM over Pr 52?

The structure is 252 ft (76.8 m) long with a longest span of 99 ft (30.2 m) and a deck 47 ft wide.

Who owns Pr 1 15.1 KM over Pr 52?

It is owned by the State Highway Agency.