US Bridges

SR-408 over Mills Ave

Fair

Orange County, Florida · SR-408 Eb-Mills Avenue · Structure no. 750243

Built
1973
52 years old, rebuilt 2007
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
205 ft
4 main spans
Daily traffic
93,500
2022 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR-408 over Mills Ave is a prestressed concrete stringer/multi-beam or girder carrying SR-408 over Mills Ave in Orange County, Florida. It was built in 1973 and reconstructed in 2007, so it is 52 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 93,500 vehicles a day, roughly 3% of them trucks, projected to reach 162,222 by 2042. The structure is 205 ft (62.6 m) long and 87 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR-408
CrossesMills Ave
LocationSR-408 Eb-Mills Avenue
RouteState Highway 408
CountyOrange County
StateFlorida
Coordinates28.53709, -81.36422
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.
Last inspectionOctober 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 rating59.4 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length205 ft (62.6 m)
Longest span59 ft (18 m)
Deck width87 ft (26.5 m)
Roadway width81 ft (24.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic93,500 (2022)
Projected traffic162,222 by 2042
Trucks3%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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-408 over Mills Ave built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2007.

What condition is SR-408 over Mills Ave 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 October 2023.

How much traffic does SR-408 over Mills Ave carry?

About 93,500 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is SR-408 over Mills Ave?

The structure is 205 ft (62.6 m) long with a longest span of 59 ft (18 m) and a deck 87 ft wide.

Who owns SR-408 over Mills Ave?

It is owned by the State Toll Authority.