US Bridges

Williams Road over Ramp A-1 & I-4

Good

Hillsborough County, Florida · 0.4MI North of US-92 · Structure no. 100429

Built
1984
41 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
260 ft
4 main spans
Daily traffic
2,500
2023 count
Owner
State
State Highway Agency

About this bridge

Williams Road over Ramp A-1 & I-4 is a prestressed concrete stringer/multi-beam or girder carrying Williams Road over Ramp A-1 & I-4 in Hillsborough County, Florida. It was built in 1984, so it is 41 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 2,500 vehicles a day, roughly 9% of them trucks, projected to reach 4,338 by 2042. The structure is 260 ft (79.1 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesWilliams Road
CrossesRamp A-1 & I-4
Location0.4MI North of US-92
RouteCounty Highway 0
CountyHillsborough County
StateFlorida
Coordinates28.00319, -82.31906
Functional classUrban Collector

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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating74.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length260 ft (79.1 m)
Longest span108 ft (33 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2023)
Projected traffic4,338 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 Williams Road over Ramp A-1 & I-4 built?

It was built in 1984, making it 41 years old in 2025.

What condition is Williams Road over Ramp A-1 & I-4 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 March 2023.

How much traffic does Williams Road over Ramp A-1 & I-4 carry?

About 2,500 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Williams Road over Ramp A-1 & I-4?

The structure is 260 ft (79.1 m) long with a longest span of 108 ft (33 m) and a deck 43 ft wide.

Who owns Williams Road over Ramp A-1 & I-4?

It is owned by the State Highway Agency.