US Bridges

Quantum Blvd. over Lwdd E-4 Canal

Good

Palm Beach County, Florida · 0.19MI. E of Congress Ave · Structure no. 936375

Built
1988
37 years old
Condition
Good
inspected October 2024
Type
Slab
Prestressed Concrete
Length
101 ft
3 main spans
Daily traffic
2,880
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Quantum Blvd. over Lwdd E-4 Canal is a prestressed concrete slab carrying Quantum Blvd. over Lwdd E-4 Canal in Palm Beach County, Florida. It was built in 1988, so it is 37 years old, younger than the Florida average of 41.3 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 2,880 vehicles a day, roughly 1% of them trucks, projected to reach 3,600 by 2044. The structure is 101 ft (30.8 m) long and 89 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesQuantum Blvd.
CrossesLwdd E-4 Canal
Location0.19MI. E of Congress Ave
RouteCity Street 0
StateFlorida
Coordinates26.54903, -80.08617
Functional classUrban 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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.5 US tons
Inventory rating28.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHL 93
Structure length101 ft (30.8 m)
Longest span40 ft (12.2 m)
Deck width89 ft (27.1 m)
Roadway width65 ft (19.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,880 (2024)
Projected traffic3,600 by 2044
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Quantum Blvd. over Lwdd E-4 Canal built?

It was built in 1988, making it 37 years old in 2025.

What condition is Quantum Blvd. over Lwdd E-4 Canal 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 October 2024.

How much traffic does Quantum Blvd. over Lwdd E-4 Canal carry?

About 2,880 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Quantum Blvd. over Lwdd E-4 Canal?

The structure is 101 ft (30.8 m) long with a longest span of 40 ft (12.2 m) and a deck 89 ft wide.

Who owns Quantum Blvd. over Lwdd E-4 Canal?

It is owned by the City or Municipal Highway Agency.