US Bridges

Pr 181 over Lajas Creek

Fair

San Lorenzo Municipio, Puerto Rico · 11 KM South San Lorenzo · Structure no. 004171

Built
1939
86 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
49 ft
1 main span
Daily traffic
6,300
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 181 over Lajas Creek is a steel stringer/multi-beam or girder carrying Pr 181 over Lajas Creek in San Lorenzo Municipio, Puerto Rico. It was built in 1939, so it is 86 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.

It carries about 6,300 vehicles a day, roughly 4% of them trucks, projected to reach 8,600 by 2025. The structure is 49 ft (14.8 m) long and 23 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesPr 181
CrossesLajas Creek
Location11 KM South San Lorenzo
RouteState Highway 181
CountySan Lorenzo Municipio
StatePuerto Rico
Coordinates18.10861, -65.99194
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating62.4 US tons
Inventory rating31.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length49 ft (14.8 m)
Longest span49 ft (14.8 m)
Deck width23 ft (7.1 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,300 (2017)
Projected traffic8,600 by 2025
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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$308,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 181 over Lajas Creek built?

It was built in 1939, making it 86 years old in 2025.

What condition is Pr 181 over Lajas Creek 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 August 2023.

How much traffic does Pr 181 over Lajas Creek carry?

About 6,300 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Pr 181 over Lajas Creek?

The structure is 49 ft (14.8 m) long with a longest span of 49 ft (14.8 m) and a deck 23 ft wide.

Who owns Pr 181 over Lajas Creek?

It is owned by the State Highway Agency.