US Bridges

Pr 9921 over Humacao River

FairPosted for load

Las Piedras Municipio, Puerto Rico · 3.5 KM South Las Piedras · Structure no. 010661

Built
1969
56 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete Continuous
Length
128 ft
3 main spans
Daily traffic
1,400
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 9921 over Humacao River is a concrete continuous slab carrying Pr 9921 over Humacao River in Las Piedras Municipio, Puerto Rico. It was built in 1969, so it is 56 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 6 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: posted for load restriction.

It carries about 1,400 vehicles a day, roughly 2% of them trucks, projected to reach 1,800 by 2025. The structure is 128 ft (39.1 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 9921
CrossesHumacao River
Location3.5 KM South Las Piedras
RouteState Highway 9921
CountyLas Piedras Municipio
StatePuerto Rico
Coordinates18.1537, -65.8665
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.5 US tons
Inventory rating26 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length128 ft (39.1 m)
Longest span47 ft (14.4 m)
Deck width25 ft (7.7 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2017)
Projected traffic1,800 by 2025
Trucks2%
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$705,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 9921 over Humacao River built?

It was built in 1969, making it 56 years old in 2025.

What condition is Pr 9921 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 February 2023.

How much traffic does Pr 9921 over Humacao River carry?

About 1,400 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is Pr 9921 over Humacao River?

The structure is 128 ft (39.1 m) long with a longest span of 47 ft (14.4 m) and a deck 25 ft wide.

Who owns Pr 9921 over Humacao River?

It is owned by the State Highway Agency.