US Bridges

Pr 112 3.7 KM over Irrigation Channel

Poor

Isabela Municipio, Puerto Rico · 3.7 KM South of Isabela · Structure no. 017801

Built
1982
43 years old
Condition
Poor
inspected May 2024
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
5,700
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 112 3.7 KM over Irrigation Channel is a concrete slab carrying Pr 112 3.7 KM over Irrigation Channel in Isabela Municipio, Puerto Rico. It was built in 1982, so it is 43 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 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.

It carries about 5,700 vehicles a day, roughly 3% of them trucks, projected to reach 7,300 by 2025. The structure is 24 ft (7.3 m) long and 40 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesPr 112 3.7 KM
CrossesIrrigation Channel
Location3.7 KM South of Isabela
RouteState Highway 112
CountyIsabela Municipio
StatePuerto Rico
Coordinates18.46634, -67.03373
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93 US tons
Inventory rating55.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span22 ft (6.7 m)
Deck width40 ft (12.1 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,700 (2017)
Projected traffic7,300 by 2025
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed2.5 mi (4 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$170,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 112 3.7 KM over Irrigation Channel built?

It was built in 1982, making it 43 years old in 2025.

What condition is Pr 112 3.7 KM over Irrigation 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 May 2024.

How much traffic does Pr 112 3.7 KM over Irrigation Channel carry?

About 5,700 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is Pr 112 3.7 KM over Irrigation Channel?

The structure is 24 ft (7.3 m) long with a longest span of 22 ft (6.7 m) and a deck 40 ft wide.

Who owns Pr 112 3.7 KM over Irrigation Channel?

It is owned by the State Highway Agency.