Trianon LN over Br of Grand Glaize
PoorClosed to trafficSt. Louis County, Missouri · S 30 T 45 N R 5 E · Structure no. 15680
- Built
- 1971
- 54 years old
- Condition
- Poor
- inspected June 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 25 ft
- 3 main spans
- Daily traffic
- 700
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
Trianon LN over Br of Grand Glaize is a concrete continuous culvert carrying Trianon LN over Br of Grand Glaize in St. Louis County, Missouri. It was built in 1971, so it is 54 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: closed to all traffic.
It carries about 700 vehicles a day, roughly 2% of them trucks, projected to reach 945 by 2044. The structure is 25 ft (7.6 m) long and 27 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 |
|---|---|---|
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Trianon LN over Br of Grand Glaize built?
It was built in 1971, making it 54 years old in 2025.
What condition is Trianon LN over Br of Grand Glaize 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 June 2024.
How much traffic does Trianon LN over Br of Grand Glaize carry?
About 700 vehicles per day (2024 count), of which roughly 2% are trucks.
How long is Trianon LN over Br of Grand Glaize?
The structure is 25 ft (7.6 m) long with a longest span of 8 ft (2.4 m) and a deck 27 ft wide.
Who owns Trianon LN over Br of Grand Glaize?
It is owned by the County Highway Agency.