US Bridges

W/B S.R. 704 over Intracoastal Waterway

Good

Palm Beach County, Florida · Between SRA1A&SR80 Cswys. · Structure no. 930506

Built
2005
20 years old
Condition
Good
inspected November 2024
Type
Movable - Bascule
Steel
Length
1,091 ft
1 main span
Daily traffic
12,500
2024 count
Owner
State
State Highway Agency

About this bridge

W/B S.R. 704 over Intracoastal Waterway is a steel movable - bascule carrying W/B S.R. 704 over Intracoastal Waterway in Palm Beach County, Florida. It was built in 2005, so it is 20 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 12,500 vehicles a day, roughly 7% of them trucks, projected to reach 21,688 by 2042. The structure is 1,091 ft (332.6 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesW/B S.R. 704
CrossesIntracoastal Waterway
LocationBetween SRA1A&SR80 Cswys.
RouteState Highway 704
StateFlorida
Coordinates26.70611, -80.04444
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.6 US tons
Inventory rating36.6 US tons

Structure

Structure typeMovable - Bascule
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+8 approach)
Design loadHS 20 + Mod
Structure length1,091 ft (332.6 m)
Longest span202 ft (61.7 m)
Deck width50 ft (15.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deck17 ft (5.1 m)

Traffic and service

Average daily traffic12,500 (2024)
Projected traffic21,688 by 2042
Trucks7%
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

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 W/B S.R. 704 over Intracoastal Waterway built?

It was built in 2005, making it 20 years old in 2025.

What condition is W/B S.R. 704 over Intracoastal Waterway 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 November 2024.

How much traffic does W/B S.R. 704 over Intracoastal Waterway carry?

About 12,500 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is W/B S.R. 704 over Intracoastal Waterway?

The structure is 1,091 ft (332.6 m) long with a longest span of 202 ft (61.7 m) and a deck 50 ft wide.

Who owns W/B S.R. 704 over Intracoastal Waterway?

It is owned by the State Highway Agency.