US Bridges

SR618 Selmon EB over CR-573 78th ST & Palm R

Fair

Hillsborough County, Florida · 0.1MI South of SR-60 · Structure no. 100460

Built
1981
44 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,594 ft
24 main spans
Daily traffic
38,750
2022 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR618 Selmon EB over CR-573 78th ST & Palm R is a prestressed concrete stringer/multi-beam or girder carrying SR618 Selmon EB over CR-573 78th ST & Palm R in Hillsborough County, Florida. It was built in 1981, so it is 44 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 38,750 vehicles a day, roughly 7% of them trucks, projected to reach 67,231 by 2044. The structure is 1,594 ft (485.7 m) long and 49 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR618 Selmon EB
CrossesCR-573 78th ST & Palm R
Location0.1MI South of SR-60
RouteState Highway 618
CountyHillsborough County
StateFlorida
Coordinates27.95044, -82.37222
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating33.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans24
Design loadHS 20 + Mod
Structure length1,594 ft (485.7 m)
Longest span73 ft (22.2 m)
Deck width49 ft (14.9 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deck23 ft (7 m)

Traffic and service

Average daily traffic38,750 (2022)
Projected traffic67,231 by 2044
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway and waterway
Detour if closed0.6 mi (1 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was SR618 Selmon EB over CR-573 78th ST & Palm R built?

It was built in 1981, making it 44 years old in 2025.

What condition is SR618 Selmon EB over CR-573 78th ST & Palm R 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 August 2023.

How much traffic does SR618 Selmon EB over CR-573 78th ST & Palm R carry?

About 38,750 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is SR618 Selmon EB over CR-573 78th ST & Palm R?

The structure is 1,594 ft (485.7 m) long with a longest span of 73 ft (22.2 m) and a deck 49 ft wide.

Who owns SR618 Selmon EB over CR-573 78th ST & Palm R?

It is owned by the State Toll Authority.