US Bridges

Pr 3 21.7 KM over Herrera River

Fair

Rio Grande Municipio, Puerto Rico · 5 KM East of Canovanas · Structure no. 007111

Built
1956
69 years old, rebuilt 1972
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
31 ft
2 main spans
Daily traffic
36,700
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 3 21.7 KM over Herrera River is a concrete culvert carrying Pr 3 21.7 KM over Herrera River in Rio Grande Municipio, Puerto Rico. It was built in 1956 and reconstructed in 1972, so it is 69 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 36,700 vehicles a day, roughly 4% of them trucks, projected to reach 46,600 by 2025. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesPr 3 21.7 KM
CrossesHerrera River
Location5 KM East of Canovanas
RouteInterstate 3
CountyRio Grande Municipio
StatePuerto Rico
Coordinates18.37783, -65.85885
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.8 US tons
Inventory rating58 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span15 ft (4.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,700 (2017)
Projected traffic46,600 by 2025
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$93,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 3 21.7 KM over Herrera River built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1972.

What condition is Pr 3 21.7 KM over Herrera 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 April 2024.

How much traffic does Pr 3 21.7 KM over Herrera River carry?

About 36,700 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Pr 3 21.7 KM over Herrera River?

The structure is 31 ft (9.4 m) long with a longest span of 15 ft (4.5 m).

Who owns Pr 3 21.7 KM over Herrera River?

It is owned by the State Highway Agency.