PR-4494 over Depression

Fair

Isabela Municipio, Puerto Rico · 2.94 K.M. S. of Isabela · Structure no. 028441

Built: 2009; 16 years old
Condition: Fair; inspected July 2023
Type: Stringer/Multi-beam or Girder; Prestressed Concrete
Length: 331 ft; 3 main spans
Daily traffic: 600; 2017 count
Owner: State; State Highway Agency

About this bridge

PR-4494 over Depression is a prestressed concrete stringer/multi-beam or girder carrying PR-4494 over Depression in Isabela Municipio, Puerto Rico. It was built in 2009, so it is 16 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 600 vehicles a day, roughly 5% of them trucks, projected to reach 800 by 2025. The structure is 331 ft (101 m) long and 87 ft wide.

Location

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CarriesPR-4494

CrossesDepression

Location2.94 K.M. S. of Isabela

RouteState Highway 4494

CountyIsabela Municipio

StatePuerto Rico

Coordinates18.47417, -67.02311

Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

Component	Rating	Meaning
Deck	6 Satisfactory	Structural elements show some minor deterioration.
Superstructure	8 Very Good	No problems noted.
Substructure	8 Very Good	No problems noted.

Last inspectionJuly 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourBridge not over waterway

Structural evaluation8: Equal to present desirable criteria

Deck geometry9: Superior to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating87.3 US tons

Inventory rating52.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder

MaterialPrestressed Concrete

DeckConcrete, cast-in-place

Main spans3

Design loadHS 20 + Mod

Structure length331 ft (101 m)

Longest span111 ft (33.8 m)

Deck width87 ft (26.6 m)

Roadway width71 ft (21.5 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2017)

Projected traffic800 by 2025

Trucks5%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesOther

Detour if closed—

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 proposedNone recorded

Estimated improvement cost—

NavigationNot applicable (no waterway)

Frequently asked questions

When was PR-4494 over Depression built?

It was built in 2009, making it 16 years old in 2025.

What condition is PR-4494 over Depression 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 July 2023.

How much traffic does PR-4494 over Depression carry?

About 600 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is PR-4494 over Depression?

The structure is 331 ft (101 m) long with a longest span of 111 ft (33.8 m) and a deck 87 ft wide.

Who owns PR-4494 over Depression?

It is owned by the State Highway Agency.