US Bridges

SW 104 ST over SR-874 & CSX R/R

Good

Miami-Dade County, Florida · .25 Miles S/O SW 107 ST · Structure no. 870463

Built
1973
52 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
440 ft
2 main spans
Daily traffic
15,000
2024 count
Owner
Toll Authority
State Toll Authority

About this bridge

SW 104 ST over SR-874 & CSX R/R is a steel stringer/multi-beam or girder carrying SW 104 ST over SR-874 & CSX R/R in Miami-Dade County, Florida. It was built in 1973, 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 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 15,000 vehicles a day, roughly 4% of them trucks, projected to reach 26,025 by 2042. The structure is 440 ft (134.1 m) long and 94 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSW 104 ST
CrossesSR-874 & CSX R/R
Location.25 Miles S/O SW 107 ST
RouteState Highway 990
CountyMiami-Dade County
StateFlorida
Coordinates25.67195, -80.36538
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.5 US tons
Inventory rating33.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2 (+3 approach)
Design loadHS 20
Structure length440 ft (134.1 m)
Longest span137 ft (41.8 m)
Deck width94 ft (28.6 m)
Roadway width73 ft (22.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,000 (2024)
Projected traffic26,025 by 2042
Trucks4%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed1.9 mi (3 km)
TollOn a free 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 SW 104 ST over SR-874 & CSX R/R built?

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

What condition is SW 104 ST over SR-874 & CSX R/R 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 August 2024.

How much traffic does SW 104 ST over SR-874 & CSX R/R carry?

About 15,000 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is SW 104 ST over SR-874 & CSX R/R?

The structure is 440 ft (134.1 m) long with a longest span of 137 ft (41.8 m) and a deck 94 ft wide.

Who owns SW 104 ST over SR-874 & CSX R/R?

It is owned by the State Toll Authority.