US Bridges

Pr 181 over Blanca Creek

FairPosted for load

San Lorenzo Municipio, Puerto Rico · 8 KM South of San Lorenzo · Structure no. 004211

Built
1926
99 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
68 ft
2 main spans
Daily traffic
7,900
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 181 over Blanca Creek is a steel stringer/multi-beam or girder carrying Pr 181 over Blanca Creek in San Lorenzo Municipio, Puerto Rico. It was built in 1926, so it is 99 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 7,900 vehicles a day, roughly 5% of them trucks, projected to reach 10,700 by 2025. The structure is 68 ft (20.8 m) long and 24 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

No coordinates are recorded for this structure.

CarriesPr 181
CrossesBlanca Creek
Location8 KM South of San Lorenzo
RouteState Highway 181
CountySan Lorenzo Municipio
StatePuerto Rico
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 statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating39.4 US tons
Inventory rating17.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length68 ft (20.8 m)
Longest span34 ft (10.4 m)
Deck width24 ft (7.2 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,900 (2017)
Projected traffic10,700 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$314,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 181 over Blanca Creek built?

It was built in 1926, making it 99 years old in 2025.

What condition is Pr 181 over Blanca 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 Blanca Creek carry?

About 7,900 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Pr 181 over Blanca Creek?

The structure is 68 ft (20.8 m) long with a longest span of 34 ft (10.4 m) and a deck 24 ft wide.

Who owns Pr 181 over Blanca Creek?

It is owned by the State Highway Agency.