US Bridges

Ramp F (9th ST N) over I-275

Good

Pinellas County, Florida · SR-688 at I-275 · Structure no. 150250

Built
2004
21 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
322 ft
2 main spans
Daily traffic
7,100
2023 count
Owner
State
State Highway Agency

About this bridge

Ramp F (9th ST N) over I-275 is a prestressed concrete stringer/multi-beam or girder carrying Ramp F (9th ST N) over I-275 in Pinellas County, Florida. It was built in 2004, so it is 21 years old, younger than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,100 vehicles a day, roughly 7% of them trucks, projected to reach 12,318 by 2042. The structure is 322 ft (98.2 m) long and 50 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesRamp F (9th ST N)
CrossesI-275
LocationSR-688 at I-275
RouteCity Street 9
CountyPinellas County
StateFlorida
Coordinates27.89138, -82.64718
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating84.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length322 ft (98.2 m)
Longest span161 ft (49.1 m)
Deck width50 ft (15.1 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,100 (2023)
Projected traffic12,318 by 2042
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ramp F (9th ST N) over I-275 built?

It was built in 2004, making it 21 years old in 2025.

What condition is Ramp F (9th ST N) over I-275 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does Ramp F (9th ST N) over I-275 carry?

About 7,100 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Ramp F (9th ST N) over I-275?

The structure is 322 ft (98.2 m) long with a longest span of 161 ft (49.1 m) and a deck 50 ft wide.

Who owns Ramp F (9th ST N) over I-275?

It is owned by the State Highway Agency.