US Bridges

Pr 924 over Mambiche Creek

Fair

Humacao Municipio, Puerto Rico · 4.4 KM North of Humacao · Structure no. 005691

Built
1957
68 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
23 ft
1 main span
Daily traffic
13,400
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 924 over Mambiche Creek is a concrete stringer/multi-beam or girder carrying Pr 924 over Mambiche Creek in Humacao Municipio, Puerto Rico. It was built in 1957, so it is 68 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 13,400 vehicles a day, roughly 4% of them trucks, projected to reach 19,300 by 2025. The structure is 23 ft (7 m) long and 37 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

Location

Open in Google Maps
CarriesPr 924
CrossesMambiche Creek
Location4.4 KM North of Humacao
RouteState Highway 924
CountyHumacao Municipio
StatePuerto Rico
Coordinates18.18424, -65.81362
Functional classUrban 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating71.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length23 ft (7 m)
Longest span23 ft (7 m)
Deck width37 ft (11.3 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,400 (2017)
Projected traffic19,300 by 2025
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed4.3 mi (7 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$16,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 924 over Mambiche Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is Pr 924 over Mambiche 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 September 2024.

How much traffic does Pr 924 over Mambiche Creek carry?

About 13,400 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Pr 924 over Mambiche Creek?

The structure is 23 ft (7 m) long with a longest span of 23 ft (7 m) and a deck 37 ft wide.

Who owns Pr 924 over Mambiche Creek?

It is owned by the State Highway Agency.