US Bridges

Blue Heron Blvd. over Drainage Canal

Fair

Palm Beach County, Florida · 0.6MI East of Congress Av · Structure no. 930523

Built
1975
50 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
41,000
2024 count
Owner
State
State Highway Agency

About this bridge

Blue Heron Blvd. over Drainage Canal is a concrete culvert carrying Blue Heron Blvd. over Drainage Canal in Palm Beach County, Florida. It was built in 1975, so it is 50 years old, older 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 6 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 41,000 vehicles a day, roughly 7% of them trucks, projected to reach 71,135 by 2044. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesBlue Heron Blvd.
CrossesDrainage Canal
Location0.6MI East of Congress Av
RouteState Highway 708
StateFlorida
Coordinates26.78109, -80.0786
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.2 US tons
Inventory rating44.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41,000 (2024)
Projected traffic71,135 by 2044
Trucks7%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Blue Heron Blvd. over Drainage Canal built?

It was built in 1975, making it 50 years old in 2025.

What condition is Blue Heron Blvd. over Drainage Canal 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 December 2024.

How much traffic does Blue Heron Blvd. over Drainage Canal carry?

About 41,000 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Blue Heron Blvd. over Drainage Canal?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).

Who owns Blue Heron Blvd. over Drainage Canal?

It is owned by the State Highway Agency.