US Bridges

Pr 378 5.1 KM over Guayanilla River

Fair

Guayanilla Municipio, Puerto Rico · 4.5 Miles N of Guayanilla · Structure no. 006851

Built
1954
71 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete Continuous
Length
77 ft
3 main spans
Daily traffic
400
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 378 5.1 KM over Guayanilla River is a concrete continuous slab carrying Pr 378 5.1 KM over Guayanilla River in Guayanilla Municipio, Puerto Rico. It was built in 1954, so it is 71 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 400 vehicles a day, roughly 5% of them trucks, projected to reach 500 by 2025. The structure is 77 ft (23.5 m) long and 25 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesPr 378 5.1 KM
CrossesGuayanilla River
Location4.5 Miles N of Guayanilla
RouteState Highway 378
CountyGuayanilla Municipio
StatePuerto Rico
Coordinates18.0841, -66.79713
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.5 US tons
Inventory rating29.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length77 ft (23.5 m)
Longest span31 ft (9.5 m)
Deck width25 ft (7.6 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2017)
Projected traffic500 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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$36,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 378 5.1 KM over Guayanilla River built?

It was built in 1954, making it 71 years old in 2025.

What condition is Pr 378 5.1 KM over Guayanilla 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 August 2024.

How much traffic does Pr 378 5.1 KM over Guayanilla River carry?

About 400 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Pr 378 5.1 KM over Guayanilla River?

The structure is 77 ft (23.5 m) long with a longest span of 31 ft (9.5 m) and a deck 25 ft wide.

Who owns Pr 378 5.1 KM over Guayanilla River?

It is owned by the State Highway Agency.