US Bridges

Pr 186 over Grande River

FairPosted for load

Rio Grande Municipio, Puerto Rico · 10 KM South of Int Pr 3 · Structure no. 004461

Built
1941
84 years old, rebuilt 1960
Condition
Fair
inspected March 2023
Type
Slab
Concrete
Length
73 ft
3 main spans
Daily traffic
200
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 186 over Grande River is a concrete slab carrying Pr 186 over Grande River in Rio Grande Municipio, Puerto Rico. It was built in 1941 and reconstructed in 1960, so it is 84 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 200 vehicles a day, roughly 2% of them trucks, projected to reach 300 by 2025. The structure is 73 ft (22.1 m) long and 31 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesPr 186
CrossesGrande River
Location10 KM South of Int Pr 3
RouteState Highway 186
CountyRio Grande Municipio
StatePuerto Rico
Coordinates18.37659, -65.8216
Functional classRural Major 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
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.6 US tons
Inventory rating27.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length73 ft (22.1 m)
Longest span26 ft (7.9 m)
Deck width31 ft (9.3 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2017)
Projected traffic300 by 2025
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.2 mi (10 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$481,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 186 over Grande River built?

It was built in 1941, making it 84 years old in 2025. It was reconstructed in 1960.

What condition is Pr 186 over Grande 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 March 2023.

How much traffic does Pr 186 over Grande River carry?

About 200 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is Pr 186 over Grande River?

The structure is 73 ft (22.1 m) long with a longest span of 26 ft (7.9 m) and a deck 31 ft wide.

Who owns Pr 186 over Grande River?

It is owned by the State Highway Agency.