US Bridges

Pr 18 2.1 KM over Piedras River

FairPosted for load

San Juan Municipio, Puerto Rico · 0.3 KM N Int PR17 & P · Structure no. 010101

Built
1967
58 years old, rebuilt 1982
Condition
Fair
inspected December 2023
Type
Tee Beam
Concrete Continuous
Length
133 ft
3 main spans
Daily traffic
261,000
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 18 2.1 KM over Piedras River is a concrete continuous tee beam carrying Pr 18 2.1 KM over Piedras River in San Juan Municipio, Puerto Rico. It was built in 1967 and reconstructed in 1982, so it is 58 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 261,000 vehicles a day, roughly 5% of them trucks, projected to reach 298,000 by 2025. The structure is 133 ft (40.5 m) long and 153 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesPr 18 2.1 KM
CrossesPiedras River
Location0.3 KM N Int PR17 & P
RouteInterstate 18
CountySan Juan Municipio
StatePuerto Rico
Coordinates18.41148, -66.07022
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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.3 US tons
Inventory rating22.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length133 ft (40.5 m)
Longest span46 ft (14 m)
Deck width153 ft (46.5 m)
Roadway width146 ft (44.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic261,000 (2017)
Projected traffic298,000 by 2025
Trucks5%
Lanes on structure9
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
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$124,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 18 2.1 KM over Piedras River built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1982.

What condition is Pr 18 2.1 KM over Piedras River 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 December 2023.

How much traffic does Pr 18 2.1 KM over Piedras River carry?

About 261,000 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Pr 18 2.1 KM over Piedras River?

The structure is 133 ft (40.5 m) long with a longest span of 46 ft (14 m) and a deck 153 ft wide.

Who owns Pr 18 2.1 KM over Piedras River?

It is owned by the State Highway Agency.