Rm 620 over Chisolm Trail & UPRR
Williamson County, Texas · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Rm 620 over Chisolm Trail & UPRR in Williamson 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 42,344 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 804 of the 1,171 inventoried bridges in Williamson County rated good (68.7%); 4 (0.3%) 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 April 2023, on a 48-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 → (30.51124, -97.68946)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 9 | 9 | Excellent condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 488 ft |
| Location | 0.11 Mi NW of Ih 35 |
| NBI structure number | 142460068301489 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2023 |
| Inspection interval (item 91) | 48 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Texas department of transportation.
Busiest bridges in Williamson County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ih 35 SB over South San Gabriel River | 1965 | 517,256 | Fair |
| Ih 35 Ml & Nbfr over Draw | 1960 | 209,037 | Fair |
| N Ih 35 Off Ramp over UPRR & Mcneil Rd | 2018 | 207,900 | Good |
| N Ih 35 on Ramp over UPRR & Mcneil Rd | 2018 | 207,900 | Good |
| Ih 35 over Lake Creek | 1960 | 160,231 | Fair |
| Ih 35 over McNEIL RD; UP RR; Etc | 1990 | 151,634 | Fair |
All bridges nearby: Williamson County, TX bridge conditions · every bridge in Williamson County · Texas bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.