US Bridges

Madrid Street over Relief Canal

Good

Palm Beach County, Florida · 180FT W of Las Palmas St. · Structure no. 937359

Built
1976
49 years old
Condition
Good
inspected August 2023
Type
Slab
Prestressed Concrete
Length
71 ft
2 main spans
Daily traffic
500
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Madrid Street over Relief Canal is a prestressed concrete slab carrying Madrid Street over Relief Canal in Palm Beach County, Florida. It was built in 1976, so it is 49 years old, older 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 500 vehicles a day, roughly 2% of them trucks, projected to reach 600 by 2042. The structure is 71 ft (21.5 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMadrid Street
CrossesRelief Canal
Location180FT W of Las Palmas St.
RouteCity Street 0
StateFlorida
Coordinates26.72595, -80.21914
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length71 ft (21.5 m)
Longest span35 ft (10.7 m)
Deck width40 ft (12.2 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2023)
Projected traffic600 by 2042
Trucks2%
Lanes on structure2
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 Madrid Street over Relief Canal built?

It was built in 1976, making it 49 years old in 2025.

What condition is Madrid Street over Relief 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 August 2023.

How much traffic does Madrid Street over Relief Canal carry?

About 500 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Madrid Street over Relief Canal?

The structure is 71 ft (21.5 m) long with a longest span of 35 ft (10.7 m) and a deck 40 ft wide.

Who owns Madrid Street over Relief Canal?

It is owned by the City or Municipal Highway Agency.