US Bridges

Pr 556 0.35 KM over Coamo River

Fair

Coamo Municipio, Puerto Rico · 0.71KM North East Coamo · Structure no. 004971

Built
1948
77 years old, rebuilt 2013
Condition
Fair
inspected December 2023
Type
Culvert
Concrete
Length
65 ft
7 main spans
Daily traffic
2,600
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 556 0.35 KM over Coamo River is a concrete culvert carrying Pr 556 0.35 KM over Coamo River in Coamo Municipio, Puerto Rico. It was built in 1948 and reconstructed in 2013, so it is 77 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 2,600 vehicles a day, roughly 3% of them trucks, projected to reach 3,800 by 2025. The structure is 65 ft (19.9 m) long and 22 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesPr 556 0.35 KM
CrossesCoamo River
Location0.71KM North East Coamo
RouteState Highway 556
CountyCoamo Municipio
StatePuerto Rico
Coordinates18.08462, -66.35722
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating40.2 US tons
Inventory rating30.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans7
Design loadUnknown
Structure length65 ft (19.9 m)
Longest span10 ft (3 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,600 (2017)
Projected traffic3,800 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$110,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 556 0.35 KM over Coamo River built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 2013.

What condition is Pr 556 0.35 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 556 0.35 KM over Coamo River carry?

About 2,600 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is Pr 556 0.35 KM over Coamo River?

The structure is 65 ft (19.9 m) long with a longest span of 10 ft (3 m) and a deck 22 ft wide.

Who owns Pr 556 0.35 KM over Coamo River?

It is owned by the State Highway Agency.