US Bridges

Pr 173 over Guaynabo River

FairPosted for load

Guaynabo Municipio, Puerto Rico · 6 KM North Aguas Buenas · Structure no. 003921

Built
1939
86 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete Continuous
Length
64 ft
3 main spans
Daily traffic
7,500
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 173 over Guaynabo River is a concrete continuous slab carrying Pr 173 over Guaynabo River in Guaynabo Municipio, Puerto Rico. It was built in 1939, so it is 86 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: posted for load restriction.

It carries about 7,500 vehicles a day, roughly 2% of them trucks, projected to reach 9,800 by 2025. The structure is 64 ft (19.6 m) long and 23 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Location

Open in Google Maps
CarriesPr 173
CrossesGuaynabo River
Location6 KM North Aguas Buenas
RouteState Highway 173
CountyGuaynabo Municipio
StatePuerto Rico
Coordinates18.30404, -66.09151
Functional classUrban Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.8 US tons
Inventory rating28.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length64 ft (19.6 m)
Longest span22 ft (6.7 m)
Deck width23 ft (7.1 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,500 (2017)
Projected traffic9,800 by 2025
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 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$326,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 173 over Guaynabo River built?

It was built in 1939, making it 86 years old in 2025.

What condition is Pr 173 over Guaynabo 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 2023.

How much traffic does Pr 173 over Guaynabo River carry?

About 7,500 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is Pr 173 over Guaynabo River?

The structure is 64 ft (19.6 m) long with a longest span of 22 ft (6.7 m) and a deck 23 ft wide.

Who owns Pr 173 over Guaynabo River?

It is owned by the State Highway Agency.