US Bridges

US 75NB SH121 Conn over US 75 NB FR

Fair

Collin County, Texas · 0.5MI NE Int US75 & CR276 · Structure no. 180430004714659

Built
2017
8 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
700 ft
6 main spans
Daily traffic
1,784
2020 count
Owner
State
State Highway Agency

About this bridge

US 75NB SH121 Conn over US 75 NB FR is a prestressed concrete stringer/multi-beam or girder carrying US 75NB SH121 Conn over US 75 NB FR in Collin County, Texas. It was built in 2017, so it is 8 years old, younger than the Texas average of 44.4 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 1,784 vehicles a day, roughly 5% of them trucks, projected to reach 2,498 by 2040. The structure is 700 ft (213.4 m) long and 44 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesUS 75NB SH121 Conn
CrossesUS 75 NB FR
Location0.5MI NE Int US75 & CR276
RouteU.S. Route 75
CountyCollin County
StateTexas
Coordinates33.26419, -96.59929
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to 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 spans6
Design loadHL 93
Structure length700 ft (213.4 m)
Longest span130 ft (39.6 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,784 (2020)
Projected traffic2,498 by 2040
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
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 US 75NB SH121 Conn over US 75 NB FR built?

It was built in 2017, making it 8 years old in 2025.

What condition is US 75NB SH121 Conn over US 75 NB FR 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 November 2023.

How much traffic does US 75NB SH121 Conn over US 75 NB FR carry?

About 1,784 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is US 75NB SH121 Conn over US 75 NB FR?

The structure is 700 ft (213.4 m) long with a longest span of 130 ft (39.6 m) and a deck 44 ft wide.

Who owns US 75NB SH121 Conn over US 75 NB FR?

It is owned by the State Highway Agency.