US Bridges

Pr 348 8.5 KM over Rosario River

Fair

Mayaguez Municipio, Puerto Rico · At Int of Pr 348 & Pr · Structure no. 016081

Built
1978
47 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
167 ft
2 main spans
Daily traffic
3,500
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 348 8.5 KM over Rosario River is a prestressed concrete stringer/multi-beam or girder carrying Pr 348 8.5 KM over Rosario River in Mayaguez Municipio, Puerto Rico. It was built in 1978, so it is 47 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 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 3,500 vehicles a day, roughly 3% of them trucks, projected to reach 5,000 by 2025. The structure is 167 ft (51 m) long and 36 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesPr 348 8.5 KM
CrossesRosario River
LocationAt Int of Pr 348 & Pr
RouteState Highway 348
CountyMayaguez Municipio
StatePuerto Rico
Coordinates18.15806, -67.08535
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95.7 US tons
Inventory rating59 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length167 ft (51 m)
Longest span79 ft (24.1 m)
Deck width36 ft (10.9 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,500 (2017)
Projected traffic5,000 by 2025
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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$1.4 million (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 348 8.5 KM over Rosario River built?

It was built in 1978, making it 47 years old in 2025.

What condition is Pr 348 8.5 KM over Rosario 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 April 2024.

How much traffic does Pr 348 8.5 KM over Rosario River carry?

About 3,500 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is Pr 348 8.5 KM over Rosario River?

The structure is 167 ft (51 m) long with a longest span of 79 ft (24.1 m) and a deck 36 ft wide.

Who owns Pr 348 8.5 KM over Rosario River?

It is owned by the State Highway Agency.