US Bridges

CR-611 NB over Tarpon Cnl & Old Tpa RD

Fair

Pinellas County, Florida · Mcmullen Booth/Old Tampa · Structure no. 154156

Built
1991
34 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,104 ft
10 main spans
Daily traffic
60,000
2024 count
Owner
County
County Highway Agency

About this bridge

CR-611 NB over Tarpon Cnl & Old Tpa RD is a prestressed concrete stringer/multi-beam or girder carrying CR-611 NB over Tarpon Cnl & Old Tpa RD in Pinellas County, Florida. It was built in 1991, so it is 34 years old, younger 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 60,000 vehicles a day, roughly 7% of them trucks, projected to reach 104,100 by 2046. The structure is 1,104 ft (336.6 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCR-611 NB
CrossesTarpon Cnl & Old Tpa RD
LocationMcmullen Booth/Old Tampa
RouteCounty Highway 611
CountyPinellas County
StateFlorida
Coordinates28.06183, -82.71041
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating43.7 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length1,104 ft (336.6 m)
Longest span151 ft (46 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60,000 (2024)
Projected traffic104,100 by 2046
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway and waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 CR-611 NB over Tarpon Cnl & Old Tpa RD built?

It was built in 1991, making it 34 years old in 2025.

What condition is CR-611 NB over Tarpon Cnl & Old Tpa RD 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 2024.

How much traffic does CR-611 NB over Tarpon Cnl & Old Tpa RD carry?

About 60,000 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is CR-611 NB over Tarpon Cnl & Old Tpa RD?

The structure is 1,104 ft (336.6 m) long with a longest span of 151 ft (46 m) and a deck 43 ft wide.

Who owns CR-611 NB over Tarpon Cnl & Old Tpa RD?

It is owned by the County Highway Agency.