US Bridges

Pr 181 9.1 KM over Depression

FairPosted for load

Patillas Municipio, Puerto Rico · 7 KM North of Patillas · Structure no. 004081

Built
1940
85 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete
Length
21 ft
1 main span
Daily traffic
700
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 181 9.1 KM over Depression is a concrete slab carrying Pr 181 9.1 KM over Depression in Patillas Municipio, Puerto Rico. It was built in 1940, so it is 85 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 700 vehicles a day, roughly 5% of them trucks, projected to reach 900 by 2025. The structure is 21 ft (6.3 m) long and 27 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

Open in Google Maps
CarriesPr 181 9.1 KM
CrossesDepression
Location7 KM North of Patillas
RouteState Highway 181
CountyPatillas Municipio
StatePuerto Rico
Coordinates18.04963, -65.98915
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
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 inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating32.8 US tons
Inventory rating19.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length21 ft (6.3 m)
Longest span21 ft (6.3 m)
Deck width27 ft (8.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic700 (2017)
Projected traffic900 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 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$44,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 181 9.1 KM over Depression built?

It was built in 1940, making it 85 years old in 2025.

What condition is Pr 181 9.1 KM over Depression 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 January 2024.

How much traffic does Pr 181 9.1 KM over Depression carry?

About 700 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Pr 181 9.1 KM over Depression?

The structure is 21 ft (6.3 m) long with a longest span of 21 ft (6.3 m) and a deck 27 ft wide.

Who owns Pr 181 9.1 KM over Depression?

It is owned by the State Highway Agency.