Mo 9 S over 1st Street
FairJackson County, Missouri · S 26 T 50 N R 33 W · Structure no. 3334
- Built
- 1987
- 38 years old, rebuilt 1990
- Condition
- Fair
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 428 ft
- 4 main spans
- Daily traffic
- 9,691
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Mo 9 S over 1st Street is a steel continuous stringer/multi-beam or girder carrying Mo 9 S over 1st Street in Jackson County, Missouri. It was built in 1987 and reconstructed in 1990, so it is 38 years old, younger than the Missouri average of 45.1 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 9,691 vehicles a day, roughly 4% of them trucks, projected to reach 13,083 by 2044. The structure is 428 ft (130.5 m) long and 33 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 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mo 9 S over 1st Street built?
It was built in 1987, making it 38 years old in 2025. It was reconstructed in 1990.
What condition is Mo 9 S over 1st Street in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.
How much traffic does Mo 9 S over 1st Street carry?
About 9,691 vehicles per day (2024 count), of which roughly 4% are trucks.
How long is Mo 9 S over 1st Street?
The structure is 428 ft (130.5 m) long with a longest span of 121 ft (36.9 m) and a deck 33 ft wide.
Who owns Mo 9 S over 1st Street?
It is owned by the State Highway Agency.