Rte I90 over Big Sister Creek
Erie County, New York · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Rte I90 over Big Sister Creek in Erie County, New York, 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 1957 and reconstructed in 2012, making it 68 years old at the 2025 inventory.
- It carries about 12,209 vehicles a day (traffic count year 2020).
- It is one of 245 of the 907 inventoried bridges in Erie County rated good (27.0%); 80 (8.8%) 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 July 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 → (42.6314, -78.99427)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 283 ft |
| Location | 2.6 Mi.sw of I-90 Int 57A |
| NBI structure number | 000000005512332 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 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 New York department of transportation.
Busiest bridges in Erie County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Rte I90 over Buffalo River | 1957 | 131,277 | Fair |
| Rte I90 over Mineral Springs Rd | 2003 | 131,277 | Good |
| Rte I90 over Indian Church Rd Norfol | 1956 | 131,277 | Fair |
| Rte I90 over Galleria Drive Scajaqua | 1950 | 126,187 | Poor |
| Rte I90 over Norfolk Southern RR | 1951 | 114,760 | Fair |
| Rte I90 over William St | 1953 | 114,760 | Fair |
All bridges nearby: Erie County, NY bridge conditions · every bridge in Erie County · New York bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.