US Bridges

Pr 450 KM 2.24 over Unknown Creek

Fair

San Sebastian Municipio, Puerto Rico · 6 KM East San Sebastian · Structure no. 027421

Built
2004
21 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
54 ft
2 main spans
Daily traffic
100
2005 count
Owner
State
State Highway Agency

About this bridge

Pr 450 KM 2.24 over Unknown Creek is a steel continuous stringer/multi-beam or girder carrying Pr 450 KM 2.24 over Unknown Creek in San Sebastian Municipio, Puerto Rico. It was built in 2004, so it is 21 years old, younger 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.

It carries about 100 vehicles a day, roughly 4% of them trucks, projected to reach 200 by 2025. The structure is 54 ft (16.4 m) long and 23 ft wide. If it were closed, the detour would be 75.2 mi (121 km).

Location

Open in Google Maps
CarriesPr 450 KM 2.24
CrossesUnknown Creek
Location6 KM East San Sebastian
RouteState Highway 450
CountySan Sebastian Municipio
StatePuerto Rico
Coordinates18.32392, -66.95979
Functional classRural Minor 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating60 US tons
Inventory rating36.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length54 ft (16.4 m)
Longest span18 ft (5.6 m)
Deck width23 ft (7.1 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2005)
Projected traffic200 by 2025
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed75.2 mi (121 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 450 KM 2.24 over Unknown Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is Pr 450 KM 2.24 over Unknown 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 July 2024.

How much traffic does Pr 450 KM 2.24 over Unknown Creek carry?

About 100 vehicles per day (2005 count), of which roughly 4% are trucks.

How long is Pr 450 KM 2.24 over Unknown Creek?

The structure is 54 ft (16.4 m) long with a longest span of 18 ft (5.6 m) and a deck 23 ft wide.

Who owns Pr 450 KM 2.24 over Unknown Creek?

It is owned by the State Highway Agency.