US Bridges

Pr 3 KM 108.2 over Maunabo River

Fair

Maunabo Municipio, Puerto Rico · 1 KM Southwest of Maunabo · Structure no. 001351

Built
1930
95 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
71 ft
1 main span
Daily traffic
4,900
2017 count
Owner
State
State Highway Agency

About this bridge

Pr 3 KM 108.2 over Maunabo River is a steel stringer/multi-beam or girder carrying Pr 3 KM 108.2 over Maunabo River in Maunabo Municipio, Puerto Rico. It was built in 1930, so it is 95 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 4,900 vehicles a day, roughly 5% of them trucks, projected to reach 6,200 by 2025. The structure is 71 ft (21.5 m) long and 24 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesPr 3 KM 108.2
CrossesMaunabo River
Location1 KM Southwest of Maunabo
RouteState Highway 3
CountyMaunabo Municipio
StatePuerto Rico
Coordinates18.00453, -65.90484
Functional classRural Principal Arterial - Other

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.
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 inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating67.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length71 ft (21.5 m)
Longest span66 ft (20 m)
Deck width24 ft (7.4 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,900 (2017)
Projected traffic6,200 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemYes

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$388,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pr 3 KM 108.2 over Maunabo River built?

It was built in 1930, making it 95 years old in 2025.

What condition is Pr 3 KM 108.2 over Maunabo 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 December 2024.

How much traffic does Pr 3 KM 108.2 over Maunabo River carry?

About 4,900 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Pr 3 KM 108.2 over Maunabo River?

The structure is 71 ft (21.5 m) long with a longest span of 66 ft (20 m) and a deck 24 ft wide.

Who owns Pr 3 KM 108.2 over Maunabo River?

It is owned by the State Highway Agency.