US Bridges

SH 99 NB over Westpark Tollway

Good

Fort Bend County, Texas · @ Westpark Toll Intersect · Structure no. 120800351004116

Built
2017
8 years old
Condition
Good
inspected December 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,680 ft
15 main spans
Daily traffic
32,000
2019 count
Owner
Toll Authority
Local Toll Authority

About this bridge

SH 99 NB over Westpark Tollway is a prestressed concrete stringer/multi-beam or girder carrying SH 99 NB over Westpark Tollway 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 32,000 vehicles a day, roughly 4% of them trucks, projected to reach 1 by 1900. The structure is 1,680 ft (512.1 m) long and 42 ft wide.

Location

Open in Google Maps
CarriesSH 99 NB
CrossesWestpark Tollway
Location@ Westpark Toll Intersect
CountyFort Bend County
StateTexas
Coordinates29.70063, -95.77598
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionDecember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans15
Design loadHL 93
Structure length1,680 ft (512.1 m)
Longest span120 ft (36.6 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,000 (2019)
Projected traffic1 by 1900
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerLocal Toll Authority
Maintained byLocal Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 99 NB over Westpark Tollway built?

It was built in 2017, making it 8 years old in 2025.

What condition is SH 99 NB over Westpark Tollway 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 Westpark Tollway carry?

About 32,000 vehicles per day (2019 count), of which roughly 4% are trucks.

How long is SH 99 NB over Westpark Tollway?

The structure is 1,680 ft (512.1 m) long with a longest span of 120 ft (36.6 m) and a deck 42 ft wide.

Who owns SH 99 NB over Westpark Tollway?

It is owned by the Local Toll Authority.