US Bridges

Bw 8 Ml over S Post Oak

Good

Harris County, Texas · 3.6 MI SE of US 90A · Structure no. 121020325604330

Built
1997
28 years old, rebuilt 2013
Condition
Good
inspected August 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
320 ft
3 main spans
Daily traffic
14,985
2012 count
Owner
Toll Authority
Local Toll Authority

About this bridge

Bw 8 Ml over S Post Oak is a prestressed concrete stringer/multi-beam or girder carrying Bw 8 Ml over S Post Oak in Harris County, Texas. It was built in 1997 and reconstructed in 2013, so it is 28 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 14,985 vehicles a day, roughly 5% of them trucks, projected to reach 26,520 by 2032. The structure is 320 ft (97.5 m) long and 143 ft wide.

CarriesBw 8 Ml
CrossesS Post Oak
Location3.6 MI SE of US 90A
StateTexas
Coordinates29.60018, -95.46436
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length320 ft (97.5 m)
Longest span120 ft (36.6 m)
Deck width143 ft (43.5 m)
Roadway width138 ft (42.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,985 (2012)
Projected traffic26,520 by 2032
Trucks5%
Lanes on structure8
Traffic directionTwo-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 Bw 8 Ml over S Post Oak built?

It was built in 1997, making it 28 years old in 2025. It was reconstructed in 2013.

What condition is Bw 8 Ml over S Post Oak 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 August 2022.

How much traffic does Bw 8 Ml over S Post Oak carry?

About 14,985 vehicles per day (2012 count), of which roughly 5% are trucks.

How long is Bw 8 Ml over S Post Oak?

The structure is 320 ft (97.5 m) long with a longest span of 120 ft (36.6 m) and a deck 143 ft wide.

Who owns Bw 8 Ml over S Post Oak?

It is owned by the Local Toll Authority.