SH 99 NB over South Mason Road
GoodFort Bend County, Texas · 3.7 MI S of Westpark Toll · Structure no. 120800351004114
- Built
- 2017
- 8 years old
- Condition
- Good
- inspected December 2022
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 303 ft
- 1 main span
- Daily traffic
- 28,000
- 2019 count
- Owner
- Toll Authority
- Local Toll Authority
About this bridge
SH 99 NB over South Mason Road is a prestressed concrete stringer/multi-beam or girder carrying SH 99 NB over South Mason Road in Fort Bend County, Texas. It was built in 2017, so it is 8 years old, younger than the Texas average of 44.4 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 28,000 vehicles a day, roughly 4% of them trucks, projected to reach 39,200 by 2039. The structure is 303 ft (92.4 m) long and 42 ft wide.
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 | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 99 NB over South Mason Road built?
It was built in 2017, making it 8 years old in 2025.
What condition is SH 99 NB over South Mason Road 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 December 2022.
How much traffic does SH 99 NB over South Mason Road carry?
About 28,000 vehicles per day (2019 count), of which roughly 4% are trucks.
How long is SH 99 NB over South Mason Road?
The structure is 303 ft (92.4 m) long with a longest span of 123 ft (37.5 m) and a deck 42 ft wide.
Who owns SH 99 NB over South Mason Road?
It is owned by the Local Toll Authority.