US Bridges

Off Pr 636 KM 0.7 over Tanama River

PoorPosted for load

Arecibo Municipio, Puerto Rico · 320 Mts KM .7 to .1 · Structure no. E25071

Built
1997
28 years old
Condition
Poor
inspected March 2025
Type
Other
Other
Length
78 ft
1 main span
Daily traffic
500
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Off Pr 636 KM 0.7 over Tanama River is a other other carrying Off Pr 636 KM 0.7 over Tanama River in Arecibo Municipio, Puerto Rico. It was built in 1997, so it is 28 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 poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 500 vehicles a day, roughly 1% of them trucks, projected to reach 700 by 2025. The structure is 78 ft (23.8 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesOff Pr 636 KM 0.7
CrossesTanama River
Location320 Mts KM .7 to .1
RouteCounty Highway 0
CountyArecibo Municipio
StatePuerto Rico
Coordinates18.41444, -66.71194
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2025
Inspection intervalevery 6 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating60.1 US tons
Inventory rating0 US tons

Structure

Structure typeOther
MaterialOther
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length78 ft (23.8 m)
Longest span52 ft (15.8 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2017)
Projected traffic700 by 2025
Trucks1%
Lanes on structure2
Traffic directionTwo-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$295,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Off Pr 636 KM 0.7 over Tanama River built?

It was built in 1997, making it 28 years old in 2025.

What condition is Off Pr 636 KM 0.7 over Tanama River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2025.

How much traffic does Off Pr 636 KM 0.7 over Tanama River carry?

About 500 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is Off Pr 636 KM 0.7 over Tanama River?

The structure is 78 ft (23.8 m) long with a longest span of 52 ft (15.8 m) and a deck 20 ft wide.

Who owns Off Pr 636 KM 0.7 over Tanama River?

It is owned by the City or Municipal Highway Agency.