US Bridges

Modesta Street over Sabana Llana Creek

Fair

San Juan Municipio, Puerto Rico · Off Pr 3 · Structure no. 016991

Built
1965
60 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
1,800
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Modesta Street over Sabana Llana Creek is a concrete culvert carrying Modesta Street over Sabana Llana Creek in San Juan Municipio, Puerto Rico. It was built in 1965, so it is 60 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 1,800 vehicles a day, roughly 3% of them trucks, projected to reach 2,000 by 2025. The structure is 30 ft (9 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesModesta Street
CrossesSabana Llana Creek
LocationOff Pr 3
RouteCity Street 0
Coordinates18.3951, -66.00291
Functional classUrban 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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.6 US tons
Inventory rating51.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length30 ft (9 m)
Longest span14 ft (4.4 m)
Deck width43 ft (13 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2017)
Projected traffic2,000 by 2025
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$274,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Modesta Street over Sabana Llana Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Modesta Street over Sabana Llana 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 December 2024.

How much traffic does Modesta Street over Sabana Llana Creek carry?

About 1,800 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is Modesta Street over Sabana Llana Creek?

The structure is 30 ft (9 m) long with a longest span of 14 ft (4.4 m) and a deck 43 ft wide.

Who owns Modesta Street over Sabana Llana Creek?

It is owned by the City or Municipal Highway Agency.