US Bridges

SH 99 NB over W Airport Blvd

Good

Fort Bend County, Texas · 3.6 MI NW of US 90A · Structure no. 120800351004099

Built
2013
12 years old
Condition
Good
inspected December 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
322 ft
3 main spans
Daily traffic
22,786
2017 count
Owner
Toll Authority
Local Toll Authority

About this bridge

SH 99 NB over W Airport Blvd is a prestressed concrete stringer/multi-beam or girder carrying SH 99 NB over W Airport Blvd in Fort Bend County, Texas. It was built in 2013, so it is 12 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 22,786 vehicles a day, roughly 4% of them trucks, projected to reach 35,800 by 2033. The structure is 322 ft (98.1 m) long and 42 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSH 99 NB
CrossesW Airport Blvd
Location3.6 MI NW of US 90A
RouteState Highway 99
CountyFort Bend County
StateTexas
Coordinates29.64911, -95.70939
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
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 spans3
Design loadHL 93
Structure length322 ft (98.1 m)
Longest span122 ft (37.2 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,786 (2017)
Projected traffic35,800 by 2033
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 km)
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 99 NB over W Airport Blvd built?

It was built in 2013, making it 12 years old in 2025.

What condition is SH 99 NB over W Airport Blvd 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 W Airport Blvd carry?

About 22,786 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is SH 99 NB over W Airport Blvd?

The structure is 322 ft (98.1 m) long with a longest span of 122 ft (37.2 m) and a deck 42 ft wide.

Who owns SH 99 NB over W Airport Blvd?

It is owned by the Local Toll Authority.