US Bridges

Pr 389 1.0 KM over Loco River

Fair

Guanica Municipio, Puerto Rico · From Pr 116 to Bo. Susua · Structure no. 016121

Built
1950
75 years old
Condition
Fair
inspected March 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
1,700
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 389 1.0 KM over Loco River is a steel stringer/multi-beam or girder carrying Pr 389 1.0 KM over Loco River in Guanica Municipio, Puerto Rico. It was built in 1950, so it is 75 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. Its operating status is: open, posting recommended but not legally implemented.

It carries about 1,700 vehicles a day, roughly 3% of them trucks, projected to reach 2,400 by 2025. The structure is 30 ft (9 m) long and 22 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesPr 389 1.0 KM
CrossesLoco River
LocationFrom Pr 116 to Bo. Susua
RouteState Highway 389
CountyGuanica Municipio
StatePuerto Rico
Coordinates18.00341, -66.881
Functional classRural 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
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMarch 2025
Inspection intervalevery 6 months
Operating statusOpen, posting recommended but not legally implemented
ScourFoundations stable; action required to protect exposed foundations
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 alignment6: Equal to present minimum criteria
Operating rating34.4 US tons
Inventory rating18.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length30 ft (9 m)
Longest span25 ft (7.6 m)
Deck width22 ft (6.8 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2017)
Projected traffic2,400 by 2025
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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$222,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 389 1.0 KM over Loco River built?

It was built in 1950, making it 75 years old in 2025.

What condition is Pr 389 1.0 KM over Loco 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 March 2025.

How much traffic does Pr 389 1.0 KM over Loco River carry?

About 1,700 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is Pr 389 1.0 KM over Loco River?

The structure is 30 ft (9 m) long with a longest span of 25 ft (7.6 m) and a deck 22 ft wide.

Who owns Pr 389 1.0 KM over Loco River?

It is owned by the State Highway Agency.