Sth 21 over Branch Lemonweir Creek
Monroe County, Wisconsin · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Sth 21 over Branch Lemonweir Creek in Monroe County, Wisconsin, 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 2000, making it 25 years old at the 2025 inventory.
- It carries about 4,700 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 160 of the 374 inventoried bridges in Monroe County rated good (42.8%); 20 (5.3%) 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 October 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 → (44.02696, -90.36014)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 95 ft |
| Location | 2.6M E Jct Sth 173 |
| NBI structure number | B41022200000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 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 Wisconsin department of transportation.
Busiest bridges in Monroe County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ih 90-ih 94 over Bear Creek | 1963 | 37,900 | Good |
| Ih 90-ih 94 over W Fk Bear Creek | 1963 | 37,900 | Good |
| Ih 90/94 WB over Lrd Funnel Rd | 2010 | 31,900 | Good |
| Ih 94 over Mud Creek | 1963 | 26,100 | Fair |
| Ih NW Ramp Ih 94 over Lemonweir River | 2003 | 26,100 | Good |
| Ih 90 Eb-ih 94 EB over Br Allen Creek | 1963 | 18,950 | Fair |
All bridges nearby: Monroe County, WI bridge conditions · every bridge in Monroe County · Wisconsin bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.