I0220 over Swan Lake Road
Bossier Parish, Louisiana · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I0220 over Swan Lake Road in Bossier Parish, Louisiana, 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 1978, making it 47 years old at the 2025 inventory.
- It carries about 35,972 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 74 of the 269 inventoried bridges in Bossier Parish rated good (27.5%); 41 (15.2%) 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 November 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 → (32.55749, -93.6788)
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 240 ft |
| Location | 1.9 Mi East of La 3105 |
| NBI structure number | 040804513105611 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | November 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Louisiana department of transportation.
Busiest bridges in Bossier Parish
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I0020 over Ramp J-2 | 1965 | 71,593 | Fair |
| I0020 over Traffic Street | 1966 | 71,593 | Fair |
| I0020 over Hamilton Mills Road | 1966 | 71,593 | Fair |
| I0020 over US 71 Kcsrr Ramp SW | 1966 | 71,593 | Fair |
| I0020 over La 72/OLD Minden Rd. | 1967 | 71,593 | Fair |
| I0020 over Icg RR | 1967 | 71,593 | Fair |
All bridges nearby: Bossier Parish, LA bridge conditions · every bridge in Bossier Parish · Louisiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.