US Bridges

Pr 420 3.2 KM over Culebrinas River

Fair

Moca Municipio, Puerto Rico · 3 KM South of Pr 111 · Structure no. 016071

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

About this bridge

Pr 420 3.2 KM over Culebrinas River is a prestressed concrete stringer/multi-beam or girder carrying Pr 420 3.2 KM over Culebrinas River in Moca 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 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 500 vehicles a day, roughly 5% of them trucks, projected to reach 700 by 2025. The structure is 199 ft (60.6 m) long and 27 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesPr 420 3.2 KM
CrossesCulebrinas River
Location3 KM South of Pr 111
RouteState Highway 420
CountyMoca Municipio
StatePuerto Rico
Coordinates18.35239, -67.06434
Functional classRural Minor 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.
Superstructure7 GoodSome minor problems.
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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating92.5 US tons
Inventory rating17 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length199 ft (60.6 m)
Longest span95 ft (29.1 m)
Deck width27 ft (8.3 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2017)
Projected traffic700 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$1.2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 420 3.2 KM over Culebrinas River built?

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

What condition is Pr 420 3.2 KM over Culebrinas 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 May 2024.

How much traffic does Pr 420 3.2 KM over Culebrinas River carry?

About 500 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Pr 420 3.2 KM over Culebrinas River?

The structure is 199 ft (60.6 m) long with a longest span of 95 ft (29.1 m) and a deck 27 ft wide.

Who owns Pr 420 3.2 KM over Culebrinas River?

It is owned by the State Highway Agency.