US Bridges

Pr 1 over Pr 18 (las Americas Exp)

Poor

San Juan Municipio, Puerto Rico · 6 KM S W of Rio Piedras · Structure no. 012571

Built
1977
48 years old
Condition
Poor
inspected March 2025
Type
Tee Beam
Concrete Continuous
Length
388 ft
6 main spans
Daily traffic
45,500
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 1 over Pr 18 (las Americas Exp) is a concrete continuous tee beam carrying Pr 1 over Pr 18 (las Americas Exp) 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 388 ft (118.4 m) long and 59 ft wide.

Location

Open in Google Maps
CarriesPr 1
CrossesPr 18 (las Americas Exp)
Location6 KM S W of Rio Piedras
RouteState Highway 1
CountySan Juan Municipio
StatePuerto Rico
Coordinates18.37854, -66.07109
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2025
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 alignment6: Equal to present minimum criteria
Operating rating59.5 US tons
Inventory rating36.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length388 ft (118.4 m)
Longest span78 ft (23.8 m)
Deck width59 ft (17.9 m)
Roadway width52 ft (16 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45,500 (2017)
Projected traffic53,200 by 2025
Trucks4%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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$3.6 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pr 1 over Pr 18 (las Americas Exp) built?

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

What condition is Pr 1 over Pr 18 (las Americas Exp) 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 March 2025.

How much traffic does Pr 1 over Pr 18 (las Americas Exp) carry?

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

How long is Pr 1 over Pr 18 (las Americas Exp)?

The structure is 388 ft (118.4 m) long with a longest span of 78 ft (23.8 m) and a deck 59 ft wide.

Who owns Pr 1 over Pr 18 (las Americas Exp)?

It is owned by the State Highway Agency.