US Bridges

Pr 506 KM 1.25 over Inabon River

Fair

Juana Diaz Municipio, Puerto Rico · Pr 5509 KM 1.0 · Structure no. 027661

Built
2004
21 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
210 ft
3 main spans
Daily traffic
11,200
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Pr 506 KM 1.25 over Inabon River is a prestressed concrete stringer/multi-beam or girder carrying Pr 506 KM 1.25 over Inabon River in Juana Diaz Municipio, Puerto Rico. It was built in 2004, so it is 21 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 11,200 vehicles a day, roughly 4% of them trucks, projected to reach 13,900 by 2025. The structure is 210 ft (63.9 m) long and 38 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesPr 506 KM 1.25
CrossesInabon River
LocationPr 5509 KM 1.0
RouteState Highway 509
Coordinates18.03889, -66.53733
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.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.2 US tons
Inventory rating30.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length210 ft (63.9 m)
Longest span65 ft (19.7 m)
Deck width38 ft (11.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,200 (2017)
Projected traffic13,900 by 2025
Trucks4%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 506 KM 1.25 over Inabon River built?

It was built in 2004, making it 21 years old in 2025.

What condition is Pr 506 KM 1.25 over Inabon 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 February 2024.

How much traffic does Pr 506 KM 1.25 over Inabon River carry?

About 11,200 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Pr 506 KM 1.25 over Inabon River?

The structure is 210 ft (63.9 m) long with a longest span of 65 ft (19.7 m) and a deck 38 ft wide.

Who owns Pr 506 KM 1.25 over Inabon River?

It is owned by the City or Municipal Highway Agency.