US Bridges

31st Ave NE over Smacks Bayou Canal

Fair

Pinellas County, Florida · 158FT East of Maple ST · Structure no. 157152

Built
1960
65 years old
Condition
Fair
inspected July 2023
Type
Slab
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
447
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

31st Ave NE over Smacks Bayou Canal is a prestressed concrete slab carrying 31st Ave NE over Smacks Bayou Canal in Pinellas County, Florida. It was built in 1960, so it is 65 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 447 vehicles a day, roughly 1% of them trucks, projected to reach 776 by 2042. The structure is 29 ft (8.8 m) long and 34 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
Carries31st Ave NE
CrossesSmacks Bayou Canal
Location158FT East of Maple ST
RouteCity Street 0
CountyPinellas County
StateFlorida
Coordinates27.80006, -82.62361
Functional classUrban Local

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 protection9 ExcellentNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating64.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span29 ft (8.8 m)
Deck width34 ft (10.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic447 (2023)
Projected traffic776 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 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 31st Ave NE over Smacks Bayou Canal built?

It was built in 1960, making it 65 years old in 2025.

What condition is 31st Ave NE over Smacks Bayou 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 July 2023.

How much traffic does 31st Ave NE over Smacks Bayou Canal carry?

About 447 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is 31st Ave NE over Smacks Bayou Canal?

The structure is 29 ft (8.8 m) long with a longest span of 29 ft (8.8 m) and a deck 34 ft wide.

Who owns 31st Ave NE over Smacks Bayou Canal?

It is owned by the City or Municipal Highway Agency.