US Bridges

Pr 555 3.8 KM over Coamo River

Fair

Coamo Municipio, Puerto Rico · 9 KM North West of Coamo · Structure no. 013701

Built
1973
52 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
110 ft
1 main span
Daily traffic
600
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 555 3.8 KM over Coamo River is a prestressed concrete stringer/multi-beam or girder carrying Pr 555 3.8 KM over Coamo River in Coamo Municipio, Puerto Rico. It was built in 1973, so it is 52 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 600 vehicles a day, roughly 3% of them trucks, projected to reach 900 by 2025. The structure is 110 ft (33.4 m) long and 30 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesPr 555 3.8 KM
CrossesCoamo River
Location9 KM North West of Coamo
RouteState Highway 555
CountyCoamo Municipio
StatePuerto Rico
Coordinates18.13, -66.36481
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating104.8 US tons
Inventory rating65 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length110 ft (33.4 m)
Longest span110 ft (33.4 m)
Deck width30 ft (9.2 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2017)
Projected traffic900 by 2025
Trucks3%
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$92,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 555 3.8 KM over Coamo River built?

It was built in 1973, making it 52 years old in 2025.

What condition is Pr 555 3.8 KM over Coamo 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 December 2023.

How much traffic does Pr 555 3.8 KM over Coamo River carry?

About 600 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is Pr 555 3.8 KM over Coamo River?

The structure is 110 ft (33.4 m) long with a longest span of 110 ft (33.4 m) and a deck 30 ft wide.

Who owns Pr 555 3.8 KM over Coamo River?

It is owned by the State Highway Agency.