US Bridges

77th Ave WB X-Over over Canal 12

Fair

Pinellas County, Florida · Just W of US-92/4th ST N · Structure no. 157237

Built
1978
47 years old
Condition
Fair
inspected July 2023
Type
Slab
Prestressed Concrete
Length
96 ft
3 main spans
Daily traffic
3,200
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

77th Ave WB X-Over over Canal 12 is a prestressed concrete slab carrying 77th Ave WB X-Over over Canal 12 in Pinellas County, Florida. It was built in 1978, so it is 47 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 3,200 vehicles a day, roughly 6% of them trucks, projected to reach 5,552 by 2042. The structure is 96 ft (29.2 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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Carries77th Ave WB X-Over
CrossesCanal 12
LocationJust W of US-92/4th ST N
RouteCity Street 0
CountyPinellas County
StateFlorida
Coordinates27.84281, -82.63934
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.3 US tons
Inventory rating26.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadH 20
Structure length96 ft (29.2 m)
Longest span32 ft (9.8 m)
Deck width32 ft (9.7 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,200 (2023)
Projected traffic5,552 by 2042
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 77th Ave WB X-Over over Canal 12 built?

It was built in 1978, making it 47 years old in 2025.

What condition is 77th Ave WB X-Over over Canal 12 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 July 2023.

How much traffic does 77th Ave WB X-Over over Canal 12 carry?

About 3,200 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is 77th Ave WB X-Over over Canal 12?

The structure is 96 ft (29.2 m) long with a longest span of 32 ft (9.8 m) and a deck 32 ft wide.

Who owns 77th Ave WB X-Over over Canal 12?

It is owned by the City or Municipal Highway Agency.