US Bridges

SW Connector over US75 & SH121 Connectors

Good

Collin County, Texas · At Int US 75 & SH 121 · Structure no. 180430036404457

Built
2011
14 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,695 ft
13 main spans
Daily traffic
11,328
2020 count
Owner
Toll Authority
Local Toll Authority

About this bridge

SW Connector over US75 & SH121 Connectors is a prestressed concrete stringer/multi-beam or girder carrying SW Connector over US75 & SH121 Connectors in Collin County, Texas. It was built in 2011, so it is 14 years old, younger than the Texas average of 44.4 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 11,328 vehicles a day, projected to reach 15,859 by 2040. The structure is 1,695 ft (516.6 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSW Connector
CrossesUS75 & SH121 Connectors
LocationAt Int US 75 & SH 121
RouteState Highway 75
CountyCollin County
StateTexas
Coordinates33.15771, -96.64769
Functional classUrban Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans13 (+2 approach)
Design loadHL 93
Structure length1,695 ft (516.6 m)
Longest span119 ft (36.3 m)
Deck width38 ft (11.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,328 (2020)
Projected traffic15,859 by 2040
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerLocal Toll Authority
Maintained byLocal 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 SW Connector over US75 & SH121 Connectors built?

It was built in 2011, making it 14 years old in 2025.

What condition is SW Connector over US75 & SH121 Connectors 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 December 2023.

How much traffic does SW Connector over US75 & SH121 Connectors carry?

About 11,328 vehicles per day (2020 count).

How long is SW Connector over US75 & SH121 Connectors?

The structure is 1,695 ft (516.6 m) long with a longest span of 119 ft (36.3 m) and a deck 38 ft wide.

Who owns SW Connector over US75 & SH121 Connectors?

It is owned by the Local Toll Authority.