US Bridges

Pr 1 120.3 KM over Inabon River

Fair

Ponce Municipio, Puerto Rico · 6.5 KM East of Ponce · Structure no. 000251

Built
1919
106 years old, rebuilt 1970
Condition
Fair
inspected September 2023
Type
Arch - Deck
Concrete Continuous
Length
163 ft
3 main spans
Daily traffic
14,000
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 1 120.3 KM over Inabon River is a concrete continuous arch - deck carrying Pr 1 120.3 KM over Inabon River in Ponce Municipio, Puerto Rico. It was built in 1919 and reconstructed in 1970, so it is 106 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: open, posting recommended but not legally implemented.

It carries about 14,000 vehicles a day, roughly 4% of them trucks, projected to reach 17,400 by 2025. The structure is 163 ft (49.8 m) long and 34 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesPr 1 120.3 KM
CrossesInabon River
Location6.5 KM East of Ponce
RouteState Highway 1
Coordinates18.00417, -66.55361
Functional classRural 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
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 inspectionSeptember 2023
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 alignment8: Equal to present desirable criteria
Operating rating32.1 US tons
Inventory rating24.8 US tons

Structure

Structure typeArch - Deck
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length163 ft (49.8 m)
Longest span56 ft (17 m)
Deck width34 ft (10.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,000 (2017)
Projected traffic17,400 by 2025
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$1.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 1 120.3 KM over Inabon River built?

It was built in 1919, making it 106 years old in 2025. It was reconstructed in 1970.

What condition is Pr 1 120.3 KM over Inabon 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 September 2023.

How much traffic does Pr 1 120.3 KM over Inabon River carry?

About 14,000 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Pr 1 120.3 KM over Inabon River?

The structure is 163 ft (49.8 m) long with a longest span of 56 ft (17 m) and a deck 34 ft wide.

Who owns Pr 1 120.3 KM over Inabon River?

It is owned by the State Highway Agency.