US Bridges

Pr 187 28.3 KM over CASTAÑON Channel

PoorPosted for load

Rio Grande Municipio, Puerto Rico · 1 KM North of Rio Grande · Structure no. 004531

Built
1927
98 years old
Condition
Poor
inspected November 2024
Type
Slab
Concrete
Length
28 ft
1 main span
Daily traffic
5,200
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Pr 187 28.3 KM over CASTAÑON Channel is a concrete slab carrying Pr 187 28.3 KM over CASTAÑON Channel in Rio Grande Municipio, Puerto Rico. It was built in 1927, so it is 98 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 5,200 vehicles a day, roughly 4% of them trucks, projected to reach 7,000 by 2025. The structure is 28 ft (8.6 m) long and 20 ft wide. If it were closed, the detour would be 32.3 mi (52 km).

Location

Open in Google Maps
CarriesPr 187 28.3 KM
CrossesCASTAÑON Channel
Location1 KM North of Rio Grande
RouteState Highway 187
CountyRio Grande Municipio
StatePuerto Rico
Coordinates18.39171, -65.82488
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating10.8 US tons
Inventory rating6.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length28 ft (8.6 m)
Longest span28 ft (8.6 m)
Deck width20 ft (6.2 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,200 (2017)
Projected traffic7,000 by 2025
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed32.3 mi (52 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$297,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 187 28.3 KM over CASTAÑON Channel built?

It was built in 1927, making it 98 years old in 2025.

What condition is Pr 187 28.3 KM over CASTAÑON Channel in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.

How much traffic does Pr 187 28.3 KM over CASTAÑON Channel carry?

About 5,200 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Pr 187 28.3 KM over CASTAÑON Channel?

The structure is 28 ft (8.6 m) long with a longest span of 28 ft (8.6 m) and a deck 20 ft wide.

Who owns Pr 187 28.3 KM over CASTAÑON Channel?

It is owned by the City or Municipal Highway Agency.