US Bridges

Pr 378 7.4 KM over Guayanilla River

Poor

Guayanilla Municipio, Puerto Rico · 9 KM North of Guayanilla · Structure no. 006231

Built
1958
67 years old
Condition
Poor
inspected October 2024
Type
Tee Beam
Concrete Continuous
Length
98 ft
2 main spans
Daily traffic
400
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 378 7.4 KM over Guayanilla River is a concrete continuous tee beam carrying Pr 378 7.4 KM over Guayanilla River in Guayanilla Municipio, Puerto Rico. It was built in 1958, so it is 67 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 poor condition with a lowest component rating of 2 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 400 vehicles a day, roughly 5% of them trucks, projected to reach 500 by 2025. The structure is 98 ft (29.9 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 378 7.4 KM
CrossesGuayanilla River
Location9 KM North of Guayanilla
RouteState Highway 378
CountyGuayanilla Municipio
StatePuerto Rico
Coordinates18.09661, -66.79313
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 6 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.2 US tons
Inventory rating30.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length98 ft (29.9 m)
Longest span46 ft (14.1 m)
Deck width22 ft (6.8 m)
Roadway width17 ft (5.2 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$61,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 378 7.4 KM over Guayanilla River built?

It was built in 1958, making it 67 years old in 2025.

What condition is Pr 378 7.4 KM over Guayanilla River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Pr 378 7.4 KM over Guayanilla River carry?

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

How long is Pr 378 7.4 KM over Guayanilla River?

The structure is 98 ft (29.9 m) long with a longest span of 46 ft (14.1 m) and a deck 22 ft wide.

Who owns Pr 378 7.4 KM over Guayanilla River?

It is owned by the State Highway Agency.