US Bridges

Australian Ave NB over City of Wpb Canal

Good

Palm Beach County, Florida · 0.3MI S of 45th Street · Structure no. 937703

Built
1959
66 years old
Condition
Good
inspected May 2024
Type
Slab
Concrete
Length
93 ft
6 main spans
Daily traffic
14,500
2023 count
Owner
County
County Highway Agency

About this bridge

Australian Ave NB over City of Wpb Canal is a concrete slab carrying Australian Ave NB over City of Wpb Canal in Palm Beach County, Florida. It was built in 1959, so it is 66 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 14,500 vehicles a day, roughly 8% of them trucks, projected to reach 2,516 by 2045. The structure is 93 ft (28.3 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesAustralian Ave NB
CrossesCity of Wpb Canal
Location0.3MI S of 45th Street
RouteCounty Highway 704A
StateFlorida
Coordinates26.74886, -80.07129
Functional classUrban Minor Arterial

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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating43 US tons
Inventory rating25.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans6
Design loadH 15
Structure length93 ft (28.3 m)
Longest span15 ft (4.7 m)
Deck width35 ft (10.8 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,500 (2023)
Projected traffic2,516 by 2045
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Australian Ave NB over City of Wpb Canal built?

It was built in 1959, making it 66 years old in 2025.

What condition is Australian Ave NB over City of Wpb 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 May 2024.

How much traffic does Australian Ave NB over City of Wpb Canal carry?

About 14,500 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Australian Ave NB over City of Wpb Canal?

The structure is 93 ft (28.3 m) long with a longest span of 15 ft (4.7 m) and a deck 35 ft wide.

Who owns Australian Ave NB over City of Wpb Canal?

It is owned by the County Highway Agency.