Mo 21 S over Pedestrain Trail
PoorPosted for loadSt. Louis County, Missouri · S 2995 T 44 N R 6 E · Structure no. 948
- Built
- 1969
- 56 years old
- Condition
- Poor
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 148 ft
- 3 main spans
- Daily traffic
- 18,182
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Mo 21 S over Pedestrain Trail is a steel continuous stringer/multi-beam or girder carrying Mo 21 S over Pedestrain Trail in St. Louis County, Missouri. It was built in 1969, so it is 56 years old, older than the Missouri average of 45.1 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 18,182 vehicles a day, roughly 5% of them trucks, projected to reach 25,455 by 2044. The structure is 148 ft (45.1 m) long and 75 ft wide. If it were closed, the detour would be 0.6 mi (1 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mo 21 S over Pedestrain Trail built?
It was built in 1969, making it 56 years old in 2025.
What condition is Mo 21 S over Pedestrain Trail in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.
How much traffic does Mo 21 S over Pedestrain Trail carry?
About 18,182 vehicles per day (2024 count), of which roughly 5% are trucks.
How long is Mo 21 S over Pedestrain Trail?
The structure is 148 ft (45.1 m) long with a longest span of 56 ft (17.1 m) and a deck 75 ft wide.
Who owns Mo 21 S over Pedestrain Trail?
It is owned by the State Highway Agency.