SH 121 Nbml over Pilot Grove Creek
Collin County, Texas · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SH 121 Nbml over Pilot Grove Creek in Collin County, Texas, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 2023, making it 2 years old at the 2025 inventory.
- It carries about 16,000 vehicles a day (traffic count year 2017).
- Its listed owner is the state highway agency.
- It is one of 770 of the 1,139 inventoried bridges in Collin County rated good (67.6%); 1 (0.1%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated August 2023, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (33.37006, -96.42641)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 270 ft |
| Location | 1.7 Miles SW of SH 160 |
| NBI structure number | 180430054903241 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Texas department of transportation.
Busiest bridges in Collin County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 75 over Prairie Creek | 1992 | 246,848 | Fair |
| US 75 over Renner Rd | 1992 | 246,848 | Fair |
| US 75 over Spring Creek | 1992 | 246,848 | Fair |
| US 75 over Drain | 1989 | 229,617 | Fair |
| US 75 over Bowman Branch | 1989 | 229,617 | Fair |
| US 75 over Drain | 1989 | 229,617 | Good |
All bridges nearby: Collin County, TX bridge conditions · every bridge in Collin County · Texas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.