US Bridges

Pr 7731 0.85 KM over LA Plata River

PoorPosted for load

Cayey Municipio, Puerto Rico · 2.6 KM North of Cayey · Structure no. 003821

Built
1935
90 years old
Condition
Poor
inspected February 2025
Type
Slab
Concrete Continuous
Length
27 ft
3 main spans
Daily traffic
500
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 7731 0.85 KM over LA Plata River is a concrete continuous slab carrying Pr 7731 0.85 KM over LA Plata River in Cayey Municipio, Puerto Rico. It was built in 1935, so it is 90 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 3 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 500 vehicles a day, roughly 2% of them trucks, projected to reach 700 by 2025. The structure is 27 ft (8.3 m) long and 19 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesPr 7731 0.85 KM
CrossesLA Plata River
Location2.6 KM North of Cayey
RouteState Highway 7731
Coordinates18.13407, -66.16778
Functional classRural Local

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.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionFebruary 2025
Inspection intervalevery 6 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating24.5 US tons
Inventory rating19.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length27 ft (8.3 m)
Longest span8 ft (2.4 m)
Deck width19 ft (5.7 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2017)
Projected traffic700 by 2025
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$146,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 7731 0.85 KM over LA Plata River built?

It was built in 1935, making it 90 years old in 2025.

What condition is Pr 7731 0.85 KM over LA Plata River 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 February 2025.

How much traffic does Pr 7731 0.85 KM over LA Plata River carry?

About 500 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is Pr 7731 0.85 KM over LA Plata River?

The structure is 27 ft (8.3 m) long with a longest span of 8 ft (2.4 m) and a deck 19 ft wide.

Who owns Pr 7731 0.85 KM over LA Plata River?

It is owned by the State Highway Agency.