US Bridges

SR-429 NB over Harmon Road

Good

Orange County, Florida · 3.3 Miles South of US-441 · Structure no. 750717

Built
2012
13 years old, rebuilt 2023
Condition
Good
inspected September 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
82 ft
1 main span
Daily traffic
10,750
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR-429 NB over Harmon Road is a prestressed concrete box beam or girders - single or spread carrying SR-429 NB over Harmon Road in Orange County, Florida. It was built in 2012 and reconstructed in 2023, so it is 13 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10,750 vehicles a day, roughly 6% of them trucks, projected to reach 18,651 by 2045. The structure is 82 ft (25 m) long and 67 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR-429 NB
CrossesHarmon Road
Location3.3 Miles South of US-441
CountyOrange County
StateFlorida
Coordinates28.651, -81.54344
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.9 US tons
Inventory rating36.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length82 ft (25 m)
Longest span78 ft (23.8 m)
Deck width67 ft (20.3 m)
Roadway width64 ft (19.4 m)
Vertical clearance over deck19 ft (5.7 m)

Traffic and service

Average daily traffic10,750 (2023)
Projected traffic18,651 by 2045
Trucks6%
Lanes on structure2
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-429 NB over Harmon Road built?

It was built in 2012, making it 13 years old in 2025. It was reconstructed in 2023.

What condition is SR-429 NB over Harmon Road 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 2024.

How much traffic does SR-429 NB over Harmon Road carry?

About 10,750 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is SR-429 NB over Harmon Road?

The structure is 82 ft (25 m) long with a longest span of 78 ft (23.8 m) and a deck 67 ft wide.

Who owns SR-429 NB over Harmon Road?

It is owned by the State Toll Authority.