SH 121 SB Conn over US 75
FairCollin County, Texas · 5.6 MI S of FM 455 · Structure no. 180430004714660
- Built
- 2015
- 10 years old
- Condition
- Fair
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 723 ft
- 4 main spans
- Daily traffic
- 22,343
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
SH 121 SB Conn over US 75 is a prestressed concrete stringer/multi-beam or girder carrying SH 121 SB Conn over US 75 in Collin County, Texas. It was built in 2015, so it is 10 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 22,343 vehicles a day, roughly 12% of them trucks, projected to reach 44,690 by 2035. The structure is 723 ft (220.4 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 121 SB Conn over US 75 built?
It was built in 2015, making it 10 years old in 2025.
What condition is SH 121 SB Conn over US 75 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 September 2023.
How much traffic does SH 121 SB Conn over US 75 carry?
About 22,343 vehicles per day (2015 count), of which roughly 12% are trucks.
How long is SH 121 SB Conn over US 75?
The structure is 723 ft (220.4 m) long with a longest span of 132 ft (40.2 m) and a deck 44 ft wide.
Who owns SH 121 SB Conn over US 75?
It is owned by the State Highway Agency.