US Bridges

SR-417 SB over Lake Underhill RD

Good

Orange County, Florida · SR-417- Lake Underhill RD · Structure no. 750382

Built
1989
36 years old, rebuilt 2017
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
118 ft
1 main span
Daily traffic
51,000
2022 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR-417 SB over Lake Underhill RD is a prestressed concrete stringer/multi-beam or girder carrying SR-417 SB over Lake Underhill RD in Orange County, Florida. It was built in 1989 and reconstructed in 2017, so it is 36 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 51,000 vehicles a day, roughly 7% of them trucks, projected to reach 88,485 by 2042. The structure is 118 ft (36 m) long and 73 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesSR-417 SB
CrossesLake Underhill RD
LocationSR-417- Lake Underhill RD
RouteState Highway 417
CountyOrange County
StateFlorida
Coordinates28.53925, -81.25151
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.7 US tons
Inventory rating36.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length118 ft (36 m)
Longest span116 ft (35.4 m)
Deck width73 ft (22.3 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51,000 (2022)
Projected traffic88,485 by 2042
Trucks7%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR-417 SB over Lake Underhill RD built?

It was built in 1989, making it 36 years old in 2025. It was reconstructed in 2017.

What condition is SR-417 SB over Lake Underhill RD 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 September 2023.

How much traffic does SR-417 SB over Lake Underhill RD carry?

About 51,000 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is SR-417 SB over Lake Underhill RD?

The structure is 118 ft (36 m) long with a longest span of 116 ft (35.4 m) and a deck 73 ft wide.

Who owns SR-417 SB over Lake Underhill RD?

It is owned by the State Toll Authority.