US Bridges

WB SR 706 over Intracoastal Waterway

Fair

Palm Beach County, Florida · Indiantown Rd/ Icw · Structure no. 930454

Built
1999
26 years old
Condition
Fair
inspected October 2023
Type
Movable - Bascule
Steel
Length
1,344 ft
1 main span
Daily traffic
16,000
2022 count
Owner
State
State Highway Agency

About this bridge

WB SR 706 over Intracoastal Waterway is a steel movable - bascule carrying WB SR 706 over Intracoastal Waterway in Palm Beach County, Florida. It was built in 1999, so it is 26 years old, younger than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 16,000 vehicles a day, roughly 4% of them trucks, projected to reach 27,760 by 2044. The structure is 1,344 ft (409.6 m) long and 57 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWB SR 706
CrossesIntracoastal Waterway
LocationIndiantown Rd/ Icw
RouteState Highway 706
CountyPalm Beach County
StateFlorida
Coordinates26.93398, -80.08394
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating69.9 US tons
Inventory rating42 US tons

Structure

Structure typeMovable - Bascule
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+10 approach)
Design loadHS 20 + Mod
Structure length1,344 ft (409.6 m)
Longest span130 ft (39.6 m)
Deck width57 ft (17.5 m)
Roadway width49 ft (14.8 m)
Vertical clearance over deck17 ft (5.1 m)

Traffic and service

Average daily traffic16,000 (2022)
Projected traffic27,760 by 2044
Trucks4%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway and waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was WB SR 706 over Intracoastal Waterway built?

It was built in 1999, making it 26 years old in 2025.

What condition is WB SR 706 over Intracoastal Waterway in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does WB SR 706 over Intracoastal Waterway carry?

About 16,000 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is WB SR 706 over Intracoastal Waterway?

The structure is 1,344 ft (409.6 m) long with a longest span of 130 ft (39.6 m) and a deck 57 ft wide.

Who owns WB SR 706 over Intracoastal Waterway?

It is owned by the State Highway Agency.