Mo 21 S over UP RR
GoodWashington County, Missouri · S 36 T 38 N R 2 E · Structure no. 4230
- Built
- 1993
- 32 years old
- Condition
- Good
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 208 ft
- 3 main spans
- Daily traffic
- 7,409
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Mo 21 S over UP RR is a prestressed concrete stringer/multi-beam or girder carrying Mo 21 S over UP RR in Washington County, Missouri. It was built in 1993, so it is 32 years old, younger than the Missouri average of 45.1 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 7,409 vehicles a day, roughly 9% of them trucks, projected to reach 14,077 by 2044. The structure is 208 ft (63.4 m) long and 41 ft wide. If it were closed, the detour would be 21.1 mi (34 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mo 21 S over UP RR built?
It was built in 1993, making it 32 years old in 2025.
What condition is Mo 21 S over UP RR in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.
How much traffic does Mo 21 S over UP RR carry?
About 7,409 vehicles per day (2024 count), of which roughly 9% are trucks.
How long is Mo 21 S over UP RR?
The structure is 208 ft (63.4 m) long with a longest span of 70 ft (21.2 m) and a deck 41 ft wide.
Who owns Mo 21 S over UP RR?
It is owned by the State Highway Agency.