N31 over Armbrust Creek
Sarpy County, Nebraska · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- N31 over Armbrust Creek in Sarpy County, Nebraska, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 1984, making it 41 years old at the 2025 inventory.
- It carries about 1,625 vehicles a day (traffic count year 2018).
- Its listed owner is the state highway agency.
- It is one of 73 of the 192 inventoried bridges in Sarpy County rated good (38.0%); 16 (8.3%) 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 January 2022, 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 → (41.0498, -96.2531)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 152 ft |
| Location | 6S Gretna |
| NBI structure number | S031 00805 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | January 2022 |
| Inspection interval (item 91) | 48 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 Nebraska department of transportation.
Busiest bridges in Sarpy County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I80 over Fau 5003/UP/CR 815-679-g | 1959 | 103,755 | Fair |
| I80 over Bn/fas 3789/CR 073-038-x | 1959 | 77,980 | Fair |
| US75 over Stream | 1988 | 58,870 | Fair |
| Sb-us75 over Fau 5020/CHANDLER Rd | 1988 | 58,870 | Good |
| Nb-us75 over Fau 5020/CHANDLER Rd | 1988 | 58,870 | Good |
| I80 over N370 | 1992 | 53,360 | Fair |
All bridges nearby: Sarpy County, NE bridge conditions · every bridge in Sarpy County · Nebraska bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.