US Bridges

Off Pr 958 over Herreras River

FairPosted for load

Rio Grande Municipio, Puerto Rico · Bo. Cienaga Alta R Grande · Structure no. 013311

Built
1950
75 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
900
2005 count
Owner
City
City or Municipal Highway Agency

About this bridge

Off Pr 958 over Herreras River is a steel stringer/multi-beam or girder carrying Off Pr 958 over Herreras River in Rio Grande Municipio, Puerto Rico. It was built in 1950, so it is 75 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. Its operating status is: posted for load restriction.

It carries about 900 vehicles a day, roughly 1% of them trucks, projected to reach 1,200 by 2025. The structure is 35 ft (10.8 m) long and 17 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesOff Pr 958
CrossesHerreras River
LocationBo. Cienaga Alta R Grande
RouteCounty Highway 0
CountyRio Grande Municipio
StatePuerto Rico
Coordinates18.34025, -65.86651
Functional classRural Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating31.1 US tons
Inventory rating18.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length35 ft (10.8 m)
Longest span32 ft (9.7 m)
Deck width17 ft (5.3 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic900 (2005)
Projected traffic1,200 by 2025
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$60,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Off Pr 958 over Herreras River built?

It was built in 1950, making it 75 years old in 2025.

What condition is Off Pr 958 over Herreras River 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 November 2024.

How much traffic does Off Pr 958 over Herreras River carry?

About 900 vehicles per day (2005 count), of which roughly 1% are trucks.

How long is Off Pr 958 over Herreras River?

The structure is 35 ft (10.8 m) long with a longest span of 32 ft (9.7 m) and a deck 17 ft wide.

Who owns Off Pr 958 over Herreras River?

It is owned by the City or Municipal Highway Agency.