US Bridges

Pr 1 over Piedras River

Fair

San Juan Municipio, Puerto Rico · 1 KM South of Rio Piedras · Structure no. 020131

Built
1944
81 years old, rebuilt 1986
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
66 ft
1 main span
Daily traffic
28,300
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 1 over Piedras River is a steel stringer/multi-beam or girder carrying Pr 1 over Piedras River in San Juan Municipio, Puerto Rico. It was built in 1944 and reconstructed in 1986, so it is 81 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.

It carries about 28,300 vehicles a day, roughly 4% of them trucks, projected to reach 33,100 by 2025. The structure is 66 ft (20.2 m) long and 89 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesPr 1
CrossesPiedras River
Location1 KM South of Rio Piedras
RouteState Highway 1
CountySan Juan Municipio
StatePuerto Rico
Coordinates18.39441, -66.05602
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.9 US tons
Inventory rating41.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length66 ft (20.2 m)
Longest span66 ft (20.2 m)
Deck width89 ft (27 m)
Roadway width78 ft (23.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,300 (2017)
Projected traffic33,100 by 2025
Trucks4%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
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$1.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 1 over Piedras River built?

It was built in 1944, making it 81 years old in 2025. It was reconstructed in 1986.

What condition is Pr 1 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 August 2023.

How much traffic does Pr 1 over Piedras River carry?

About 28,300 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Pr 1 over Piedras River?

The structure is 66 ft (20.2 m) long with a longest span of 66 ft (20.2 m) and a deck 89 ft wide.

Who owns Pr 1 over Piedras River?

It is owned by the State Highway Agency.