US Bridges

Pr 921 1.1 KM over Humacao River

Fair

Las Piedras Municipio, Puerto Rico · 0.5 Mile S of Las Piedras · Structure no. 006781

Built
1953
72 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
100 ft
3 main spans
Daily traffic
6,200
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 921 1.1 KM over Humacao River is a concrete continuous slab carrying Pr 921 1.1 KM over Humacao River in Las Piedras Municipio, Puerto Rico. It was built in 1953, so it is 72 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 6,200 vehicles a day, roughly 5% of them trucks, projected to reach 8,400 by 2025. The structure is 100 ft (30.5 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesPr 921 1.1 KM
CrossesHumacao River
Location0.5 Mile S of Las Piedras
RouteState Highway 921
CountyLas Piedras Municipio
StatePuerto Rico
Coordinates18.17205, -65.86918
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, posting recommended but not legally implemented
ScourFoundations stable; scour above top of footing
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.8 US tons
Inventory rating22.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length100 ft (30.5 m)
Longest span40 ft (12.1 m)
Deck width26 ft (8 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,200 (2017)
Projected traffic8,400 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$564,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 921 1.1 KM over Humacao River built?

It was built in 1953, making it 72 years old in 2025.

What condition is Pr 921 1.1 KM over Humacao 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 January 2024.

How much traffic does Pr 921 1.1 KM over Humacao River carry?

About 6,200 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Pr 921 1.1 KM over Humacao River?

The structure is 100 ft (30.5 m) long with a longest span of 40 ft (12.1 m) and a deck 26 ft wide.

Who owns Pr 921 1.1 KM over Humacao River?

It is owned by the State Highway Agency.