US Bridges

Pr 742 over Farallon River

Fair

Guayama Municipio, Puerto Rico · 8 KM South East of Cayey · Structure no. 013951

Built
1975
50 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
111 ft
1 main span
Daily traffic
1,400
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 742 over Farallon River is a prestressed concrete stringer/multi-beam or girder carrying Pr 742 over Farallon River in Guayama Municipio, Puerto Rico. It was built in 1975, so it is 50 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 fair condition with a lowest component rating of 5 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 1,400 vehicles a day, roughly 2% of them trucks, projected to reach 2,000 by 2025. The structure is 111 ft (33.7 m) long and 35 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesPr 742
CrossesFarallon River
Location8 KM South East of Cayey
RouteState Highway 742
CountyGuayama Municipio
StatePuerto Rico
Coordinates18.10013, -66.10901
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.5 US tons
Inventory rating27.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length111 ft (33.7 m)
Longest span108 ft (32.8 m)
Deck width35 ft (10.8 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2017)
Projected traffic2,000 by 2025
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

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$887,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 742 over Farallon River built?

It was built in 1975, making it 50 years old in 2025.

What condition is Pr 742 over Farallon 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 July 2023.

How much traffic does Pr 742 over Farallon River carry?

About 1,400 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is Pr 742 over Farallon River?

The structure is 111 ft (33.7 m) long with a longest span of 108 ft (32.8 m) and a deck 35 ft wide.

Who owns Pr 742 over Farallon River?

It is owned by the State Highway Agency.