US Bridges

San Martin Blvd over Riviera Bay

Fair

Pinellas County, Florida · 1.0 MI East of US-92 · Structure no. 154371

Built
1962
63 years old
Condition
Fair
inspected November 2023
Type
Slab
Prestressed Concrete
Length
117 ft
5 main spans
Daily traffic
3,600
2023 count
Owner
County
County Highway Agency

About this bridge

San Martin Blvd over Riviera Bay is a prestressed concrete slab carrying San Martin Blvd over Riviera Bay in Pinellas County, Florida. It was built in 1962, so it is 63 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 3,600 vehicles a day, roughly 4% of them trucks, projected to reach 6,246 by 2042. The structure is 117 ft (35.7 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSan Martin Blvd
CrossesRiviera Bay
Location1.0 MI East of US-92
RouteCounty Highway 0
CountyPinellas County
StateFlorida
Coordinates27.85172, -82.62397
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating79.5 US tons
Inventory rating70.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length117 ft (35.7 m)
Longest span24 ft (7.3 m)
Deck width32 ft (9.9 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,600 (2023)
Projected traffic6,246 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 San Martin Blvd over Riviera Bay built?

It was built in 1962, making it 63 years old in 2025.

What condition is San Martin Blvd over Riviera Bay 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 November 2023.

How much traffic does San Martin Blvd over Riviera Bay carry?

About 3,600 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is San Martin Blvd over Riviera Bay?

The structure is 117 ft (35.7 m) long with a longest span of 24 ft (7.3 m) and a deck 32 ft wide.

Who owns San Martin Blvd over Riviera Bay?

It is owned by the County Highway Agency.