US Bridges

Pr 3 over Blanco River

Fair

Naguabo Municipio, Puerto Rico · 3.5 KM South of Naguabo · Structure no. 014681

Built
1977
48 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
280 ft
3 main spans
Daily traffic
5,300
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 3 over Blanco River is a prestressed concrete stringer/multi-beam or girder carrying Pr 3 over Blanco River in Naguabo Municipio, Puerto Rico. It was built in 1977, so it is 48 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 5,300 vehicles a day, roughly 4% of them trucks, projected to reach 7,200 by 2025. The structure is 280 ft (85.2 m) long and 51 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesPr 3
CrossesBlanco River
Location3.5 KM South of Naguabo
RouteState Highway 3
CountyNaguabo Municipio
StatePuerto Rico
Coordinates18.18591, -65.72876
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.9 US tons
Inventory rating46.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length280 ft (85.2 m)
Longest span90 ft (27.4 m)
Deck width51 ft (15.4 m)
Roadway width46 ft (14.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,300 (2017)
Projected traffic7,200 by 2025
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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$394,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 3 over Blanco River built?

It was built in 1977, making it 48 years old in 2025.

What condition is Pr 3 over Blanco 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 October 2024.

How much traffic does Pr 3 over Blanco River carry?

About 5,300 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Pr 3 over Blanco River?

The structure is 280 ft (85.2 m) long with a longest span of 90 ft (27.4 m) and a deck 51 ft wide.

Who owns Pr 3 over Blanco River?

It is owned by the State Highway Agency.