US Bridges

Mia Off Ramp 4 over Mia Interchange

Good

Miami-Dade County, Florida · Ramp to SR 836 & 953 · Structure no. 874639

Built
2008
17 years old
Condition
Good
inspected November 2023
Type
Box Beam or Girders - Single or Spread
Steel Continuous
Length
1,248 ft
6 main spans
Daily traffic
25,500
2022 count
Owner
Toll Authority
State Toll Authority

About this bridge

Mia Off Ramp 4 over Mia Interchange is a steel continuous box beam or girders - single or spread carrying Mia Off Ramp 4 over Mia Interchange in Miami-Dade County, Florida. It was built in 2008, so it is 17 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 25,500 vehicles a day, roughly 3% of them trucks, projected to reach 44,242 by 2044. The structure is 1,248 ft (380.5 m) long and 43 ft wide.

Location

Open in Google Maps
CarriesMia Off Ramp 4
CrossesMia Interchange
LocationRamp to SR 836 & 953
RouteCity Street 0
CountyMiami-Dade County
StateFlorida
Coordinates25.79319, -80.26514
Functional classUrban Local

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating36 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6 (+4 approach)
Design loadHS 20
Structure length1,248 ft (380.5 m)
Longest span217 ft (66.1 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,500 (2022)
Projected traffic44,242 by 2044
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed—
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mia Off Ramp 4 over Mia Interchange built?

It was built in 2008, making it 17 years old in 2025.

What condition is Mia Off Ramp 4 over Mia Interchange 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 November 2023.

How much traffic does Mia Off Ramp 4 over Mia Interchange carry?

About 25,500 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Mia Off Ramp 4 over Mia Interchange?

The structure is 1,248 ft (380.5 m) long with a longest span of 217 ft (66.1 m) and a deck 43 ft wide.

Who owns Mia Off Ramp 4 over Mia Interchange?

It is owned by the State Toll Authority.