US Bridges

Australian Ave NB over Clear Lake

Good

Palm Beach County, Florida · 0.5MI S of P.B. Lakes Blv · Structure no. 937707

Built
1970
55 years old
Condition
Good
inspected May 2024
Type
Slab
Prestressed Concrete
Length
125 ft
5 main spans
Daily traffic
13,500
2023 count
Owner
County
County Highway Agency

About this bridge

Australian Ave NB over Clear Lake is a prestressed concrete slab carrying Australian Ave NB over Clear Lake in Palm Beach County, Florida. It was built in 1970, so it is 55 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 13,500 vehicles a day, roughly 2% of them trucks, projected to reach 23,423 by 2045. The structure is 125 ft (38 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesAustralian Ave NB
CrossesClear Lake
Location0.5MI S of P.B. Lakes Blv
RouteCounty Highway 0
StateFlorida
Coordinates26.71778, -80.06675
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 evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating65 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length125 ft (38 m)
Longest span25 ft (7.6 m)
Deck width37 ft (11.2 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,500 (2023)
Projected traffic23,423 by 2045
Trucks2%
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 Clear Lake built?

It was built in 1970, making it 55 years old in 2025.

What condition is Australian Ave NB over Clear Lake 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 Clear Lake carry?

About 13,500 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Australian Ave NB over Clear Lake?

The structure is 125 ft (38 m) long with a longest span of 25 ft (7.6 m) and a deck 37 ft wide.

Who owns Australian Ave NB over Clear Lake?

It is owned by the County Highway Agency.