US Bridges

Pr 164 1.8 KM over Waterway

Fair

Naranjito Municipio, Puerto Rico · At Naranjito Town · Structure no. 018571

Built
1986
39 years old
Condition
Fair
inspected January 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
59 ft
1 main span
Daily traffic
1,000
2005 count
Owner
State
State Highway Agency

About this bridge

Pr 164 1.8 KM over Waterway is a prestressed concrete box beam or girders - multiple carrying Pr 164 1.8 KM over Waterway in Naranjito Municipio, Puerto Rico. It was built in 1986, so it is 39 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 1,000 vehicles a day, roughly 3% of them trucks, projected to reach 21,877 by 2025. The structure is 59 ft (18 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesPr 164 1.8 KM
CrossesWaterway
LocationAt Naranjito Town
RouteState Highway 164
CountyNaranjito Municipio
StatePuerto Rico
Coordinates18.29955, -66.23929
Functional classUrban Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating72 US tons
Inventory rating45 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length59 ft (18 m)
Longest span56 ft (17 m)
Deck width38 ft (11.6 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2005)
Projected traffic21,877 by 2025
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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$509,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 164 1.8 KM over Waterway built?

It was built in 1986, making it 39 years old in 2025.

What condition is Pr 164 1.8 KM over Waterway 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 January 2024.

How much traffic does Pr 164 1.8 KM over Waterway carry?

About 1,000 vehicles per day (2005 count), of which roughly 3% are trucks.

How long is Pr 164 1.8 KM over Waterway?

The structure is 59 ft (18 m) long with a longest span of 56 ft (17 m) and a deck 38 ft wide.

Who owns Pr 164 1.8 KM over Waterway?

It is owned by the State Highway Agency.