US Bridges

PR-9920 KM.4.30 over Waterway Unname Creek

Good

San Lorenzo Municipio, Puerto Rico · 10.66KM. S. San Lorenzo · Structure no. 030441

Built
2000
25 years old
Condition
Good
inspected July 2023
Type
Slab
Concrete
Length
23 ft
2 main spans
Daily traffic
800
2005 count
Owner
State
State Highway Agency

About this bridge

PR-9920 KM.4.30 over Waterway Unname Creek is a concrete slab carrying PR-9920 KM.4.30 over Waterway Unname Creek in San Lorenzo Municipio, Puerto Rico. It was built in 2000, so it is 25 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 800 vehicles a day, roughly 4% of them trucks, projected to reach 900 by 2025. The structure is 23 ft (7 m) long and 21 ft wide.

Location

Open in Google Maps
CarriesPR-9920 KM.4.30
CrossesWaterway Unname Creek
Location10.66KM. S. San Lorenzo
RouteState Highway 0
CountySan Lorenzo Municipio
StatePuerto Rico
Coordinates18.08333, -65.95
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.6 US tons
Inventory rating47.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length23 ft (7 m)
Longest span12 ft (3.7 m)
Deck width21 ft (6.5 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2005)
Projected traffic900 by 2025
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was PR-9920 KM.4.30 over Waterway Unname Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is PR-9920 KM.4.30 over Waterway Unname Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does PR-9920 KM.4.30 over Waterway Unname Creek carry?

About 800 vehicles per day (2005 count), of which roughly 4% are trucks.

How long is PR-9920 KM.4.30 over Waterway Unname Creek?

The structure is 23 ft (7 m) long with a longest span of 12 ft (3.7 m) and a deck 21 ft wide.

Who owns PR-9920 KM.4.30 over Waterway Unname Creek?

It is owned by the State Highway Agency.