US Bridges

Westpark Tlwy EB over Chimney Rock & Royalton

Fair

Harris County, Texas · 0.87 MI W of IH 610 · Structure no. 121020TOL030005

Built
2004
21 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,866 ft
17 main spans
Daily traffic
10,000
2011 count
Owner
Toll Authority
Local Toll Authority

About this bridge

Westpark Tlwy EB over Chimney Rock & Royalton is a prestressed concrete stringer/multi-beam or girder carrying Westpark Tlwy EB over Chimney Rock & Royalton in Harris County, Texas. It was built in 2004, so it is 21 years old, younger than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 10,000 vehicles a day, roughly 5% of them trucks, projected to reach 50,000 by 2031. The structure is 1,866 ft (568.8 m) long and 41 ft wide.

Location

Open in Google Maps
CarriesWestpark Tlwy EB
CrossesChimney Rock & Royalton
Location0.87 MI W of IH 610
CountyHarris County
StateTexas
Coordinates29.72504, -95.47261
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to 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 spans17
Design loadHS 20
Structure length1,866 ft (568.8 m)
Longest span120 ft (36.6 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,000 (2011)
Projected traffic50,000 by 2031
Trucks5%
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 Westpark Tlwy EB over Chimney Rock & Royalton built?

It was built in 2004, making it 21 years old in 2025.

What condition is Westpark Tlwy EB over Chimney Rock & Royalton in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2023.

How much traffic does Westpark Tlwy EB over Chimney Rock & Royalton carry?

About 10,000 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is Westpark Tlwy EB over Chimney Rock & Royalton?

The structure is 1,866 ft (568.8 m) long with a longest span of 120 ft (36.6 m) and a deck 41 ft wide.

Who owns Westpark Tlwy EB over Chimney Rock & Royalton?

It is owned by the Local Toll Authority.