Spring Street over Birch Mountain Brook
Hartford County, Connecticut · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Spring Street over Birch Mountain Brook in Hartford County, Connecticut, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1905, making it 120 years old at the 2025 inventory.
- It carries about 1,200 vehicles a day (traffic count year 2018).
- Its listed owner is a town or township highway agency.
- It is one of 663 of the 916 inventoried bridges in Hartford County rated fair (72.4%); 32 (3.5%) 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 January 2025, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (41.7614, -72.49026)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Masonry deck arch |
| Length | about 26 ft |
| Location | 100(W) of Int Glen Rd |
| NBI structure number | 04149 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | January 2025 |
| 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 Connecticut department of transportation.
Busiest bridges in Hartford County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Interstate-91 over Goff Brook | 1964 | 143,400 | Fair |
| Interstate-84 over Connecticut River | 1906 | 135,200 | Fair |
| Interstate-91 over Beaver Brook | 1964 | 130,000 | Fair |
| I-84 Amtrak Ctfa over No. Branch of Park River | 1964 | 129,200 | Fair |
| Interstate-84 over Rockledge Brook | 1965 | 128,200 | Fair |
| Interstate-84 EB over US Route 44 Eastbound | 1964 | 122,600 | Fair |
All bridges nearby: Hartford County, CT bridge conditions · every bridge in Hartford County · Connecticut bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.