US Bridges

Pr 164 9.7 KM over Ca%as River

Fair

Naranjito Municipio, Puerto Rico · 3 KM N W of Naranjito · Structure no. 003611

Built
1925
100 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
67 ft
2 main spans
Daily traffic
10,900
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 164 9.7 KM over Ca%as River is a steel stringer/multi-beam or girder carrying Pr 164 9.7 KM over Ca%as River in Naranjito Municipio, Puerto Rico. It was built in 1925, so it is 100 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 fair condition with a lowest component rating of 5 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 10,900 vehicles a day, roughly 5% of them trucks, projected to reach 14,200 by 2025. The structure is 67 ft (20.3 m) long and 24 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesPr 164 9.7 KM
CrossesCa%as River
Location3 KM N W of Naranjito
RouteState Highway 164
CountyNaranjito Municipio
StatePuerto Rico
Coordinates18.31154, -66.26949
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.1 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length67 ft (20.3 m)
Longest span34 ft (10.3 m)
Deck width24 ft (7.3 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,900 (2017)
Projected traffic14,200 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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$111,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 164 9.7 KM over Ca%as River built?

It was built in 1925, making it 100 years old in 2025.

What condition is Pr 164 9.7 KM over Ca%as 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 December 2024.

How much traffic does Pr 164 9.7 KM over Ca%as River carry?

About 10,900 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Pr 164 9.7 KM over Ca%as River?

The structure is 67 ft (20.3 m) long with a longest span of 34 ft (10.3 m) and a deck 24 ft wide.

Who owns Pr 164 9.7 KM over Ca%as River?

It is owned by the State Highway Agency.