US Bridges

SR-451 NB over Marshall Lake Road

Fair

Orange County, Florida · 0.4 MI South of US-441 · Structure no. 750506

Built
2000
25 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
3,900
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR-451 NB over Marshall Lake Road is a prestressed concrete stringer/multi-beam or girder carrying SR-451 NB over Marshall Lake Road in Orange County, Florida. It was built in 2000, so it is 25 years old, younger 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 3,900 vehicles a day, roughly 5% of them trucks, projected to reach 6,767 by 2045. The structure is 72 ft (22 m) long and 55 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesSR-451 NB
CrossesMarshall Lake Road
Location0.4 MI South of US-441
RouteState Highway 451
CountyOrange County
StateFlorida
Coordinates28.67673, -81.52736
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.
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 rating89 US tons
Inventory rating53 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length72 ft (22 m)
Longest span70 ft (21.4 m)
Deck width55 ft (16.8 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,900 (2023)
Projected traffic6,767 by 2045
Trucks5%
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-451 NB over Marshall Lake Road built?

It was built in 2000, making it 25 years old in 2025.

What condition is SR-451 NB over Marshall Lake Road 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 September 2024.

How much traffic does SR-451 NB over Marshall Lake Road carry?

About 3,900 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is SR-451 NB over Marshall Lake Road?

The structure is 72 ft (22 m) long with a longest span of 70 ft (21.4 m) and a deck 55 ft wide.

Who owns SR-451 NB over Marshall Lake Road?

It is owned by the State Toll Authority.