Ia 48 over Morman Branch Creek
Montgomery County, Iowa · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ia 48 over Morman Branch Creek in Montgomery County, Iowa, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1987, making it 38 years old at the 2025 inventory.
- It carries about 2,000 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 44 of the 209 inventoried bridges in Montgomery County rated good (21.1%); 52 (24.9%) are rated poor.
- 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 → (40.9707, -95.23338)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 28 ft |
| Location | 3.8 Mi. S of U.S. 34 |
| NBI structure number | 000000000037691 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Montgomery County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ia 48 over Stream | 1931 | 7,600 | Fair |
| US 34 over East Nishnabotna River | 1964 | 4,460 | Fair |
| Ia 48 over Red Oak Creek | 1918 | 4,460 | Fair |
| US 34 over Indian Creek | 1964 | 4,030 | Fair |
| US 34 over Crabapple Creek | 1964 | 4,030 | Fair |
| US 34 over West Tarkio Creek | 1964 | 3,990 | Fair |
All bridges nearby: Montgomery County, IA bridge conditions · every bridge in Montgomery County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.