Lyon Bridge Road over Porter Bayou
PoorClosed to trafficSunflower County, Mississippi · Sec 16 T20N R 5W · Structure no. SA6700000000096
- Built
- 1977
- 48 years old
- Condition
- Poor
- inspected January 2024
- Type
- Channel Beam
- Concrete
- Length
- 95 ft
- 5 main spans
- Daily traffic
- 10
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Lyon Bridge Road over Porter Bayou is a concrete channel beam carrying Lyon Bridge Road over Porter Bayou in Sunflower County, Mississippi. It was built in 1977, so it is 48 years old, older than the Mississippi average of 38.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 2 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 10 vehicles a day, roughly 8% of them trucks, projected to reach 15 by 2043. The structure is 95 ft (29 m) long and 25 ft wide.
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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 2 Critical | Advanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Lyon Bridge Road over Porter Bayou built?
It was built in 1977, making it 48 years old in 2025.
What condition is Lyon Bridge Road over Porter Bayou 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 January 2024.
How much traffic does Lyon Bridge Road over Porter Bayou carry?
About 10 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is Lyon Bridge Road over Porter Bayou?
The structure is 95 ft (29 m) long with a longest span of 19 ft (5.8 m) and a deck 25 ft wide.
Who owns Lyon Bridge Road over Porter Bayou?
It is owned by the County Highway Agency.