SR 18 over South Fork Deer Creek
Cass County, Indiana · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 18 over South Fork Deer Creek in Cass County, Indiana, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
- It was built in 1994, making it 31 years old at the 2025 inventory.
- It carries about 1,742 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 91 of the 187 inventoried bridges in Cass County rated good (48.7%); 3 (1.6%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated fair in the 2024 inventory and is now good (deck 6 to 8, superstructure 6 to 8, substructure 6 to 8).
- Its most recent inspection on record is dated July 2024, 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 → (40.5807, -86.18122)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 8 | Very good condition |
| Superstructure | 6 | 8 | Very good condition |
| Substructure | 6 | 8 | Very good condition |
Bridge details
| Structure | Continuous concrete slab |
| Length | about 113 ft |
| Location | 00.51 E US 35 |
| NBI structure number | 004700 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Indiana department of transportation.
Busiest bridges in Cass County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 17 (3RD St) over Eel River | 1918 | 24,120 | Fair |
| Market Stold SR25 over Eel River | 2019 | 15,350 | Good |
| S Cicott St over Wabash River | 1994 | 12,500 | Fair |
| SR 25 over Wabash River S Crossing | 1988 | 12,389 | Good |
| SR 25 over Harvey Creek | 1918 | 9,061 | Good |
| 18TH Street over Trib Wabash River | 2017 | 8,875 | Good |
All bridges nearby: Cass County, IN bridge conditions · every bridge in Cass County · Indiana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.