US Bridges

Pr 1 40.4 KM over Unkown Creek

Fair

Caguas Municipio, Puerto Rico · 5 KM South West of Caguas · Structure no. 013371

Built
1890
135 years old, rebuilt 1945
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
37 ft
4 main spans
Daily traffic
17,100
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 1 40.4 KM over Unkown Creek is a concrete continuous slab carrying Pr 1 40.4 KM over Unkown Creek in Caguas Municipio, Puerto Rico. It was built in 1890 and reconstructed in 1945, so it is 135 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.

It carries about 17,100 vehicles a day, roughly 4% of them trucks, projected to reach 23,300 by 2025. The structure is 37 ft (11.4 m) long and 29 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesPr 1 40.4 KM
CrossesUnkown Creek
Location5 KM South West of Caguas
RouteState Highway 1
CountyCaguas Municipio
StatePuerto Rico
Coordinates18.19318, -66.05777
Functional classUrban Minor Arterial

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 inspectionJanuary 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length37 ft (11.4 m)
Longest span12 ft (3.8 m)
Deck width29 ft (8.9 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,100 (2017)
Projected traffic23,300 by 2025
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 with deck rehabilitation or replacement
Estimated improvement cost$535,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pr 1 40.4 KM over Unkown Creek built?

It was built in 1890, making it 135 years old in 2025. It was reconstructed in 1945.

What condition is Pr 1 40.4 KM over Unkown 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 January 2024.

How much traffic does Pr 1 40.4 KM over Unkown Creek carry?

About 17,100 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Pr 1 40.4 KM over Unkown Creek?

The structure is 37 ft (11.4 m) long with a longest span of 12 ft (3.8 m) and a deck 29 ft wide.

Who owns Pr 1 40.4 KM over Unkown Creek?

It is owned by the State Highway Agency.