US Bridges

Pr 18 over Ramp from Pr 21

FairPosted for load

San Juan Municipio, Puerto Rico · 0.17 KM South Int Pr 21 · Structure no. 009571

Built
1965
60 years old, rebuilt 1999
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete Continuous
Length
138 ft
3 main spans
Daily traffic
80,700
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 18 over Ramp from Pr 21 is a concrete continuous tee beam carrying Pr 18 over Ramp from Pr 21 in San Juan Municipio, Puerto Rico. It was built in 1965 and reconstructed in 1999, so it is 60 years old, older than the Puerto Rico average of 51.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 80,700 vehicles a day, roughly 4% of them trucks, projected to reach 101,700 by 2025. The structure is 138 ft (42 m) long and 84 ft wide.

Location

Open in Google Maps
CarriesPr 18
CrossesRamp from Pr 21
Location0.17 KM South Int Pr 21
RouteInterstate 18
CountySan Juan Municipio
StatePuerto Rico
Coordinates18.38786, -66.07245
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating31 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length138 ft (42 m)
Longest span55 ft (16.9 m)
Deck width84 ft (25.5 m)
Roadway width71 ft (21.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80,700 (2017)
Projected traffic101,700 by 2025
Trucks4%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$273,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pr 18 over Ramp from Pr 21 built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1999.

What condition is Pr 18 over Ramp from Pr 21 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does Pr 18 over Ramp from Pr 21 carry?

About 80,700 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Pr 18 over Ramp from Pr 21?

The structure is 138 ft (42 m) long with a longest span of 55 ft (16.9 m) and a deck 84 ft wide.

Who owns Pr 18 over Ramp from Pr 21?

It is owned by the State Highway Agency.