US Bridges

Greenhouse RD over Towne Lake

Good

Harris County, Texas · 0.7 MI N of Tuckerton RD · Structure no. 121020A34069010

Built
2015
10 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
90 ft
1 main span
Daily traffic
9,600
2022 count
Owner
County
County Highway Agency

About this bridge

Greenhouse RD over Towne Lake is a prestressed concrete stringer/multi-beam or girder carrying Greenhouse RD over Towne Lake in Harris County, Texas. It was built in 2015, so it is 10 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 9,600 vehicles a day, roughly 3% of them trucks, projected to reach 9,600 by 2042. The structure is 90 ft (27.4 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesGreenhouse RD
CrossesTowne Lake
Location0.7 MI N of Tuckerton RD
RouteCity Street 0
CountyHarris County
StateTexas
Coordinates29.93292, -95.70098
Functional classUrban Minor Arterial

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable 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 spans1
Design loadHL 93
Structure length90 ft (27.4 m)
Longest span90 ft (27.4 m)
Deck width37 ft (11.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,600 (2022)
Projected traffic9,600 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
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 Greenhouse RD over Towne Lake built?

It was built in 2015, making it 10 years old in 2025.

What condition is Greenhouse RD over Towne Lake 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 2023.

How much traffic does Greenhouse RD over Towne Lake carry?

About 9,600 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Greenhouse RD over Towne Lake?

The structure is 90 ft (27.4 m) long with a longest span of 90 ft (27.4 m) and a deck 37 ft wide.

Who owns Greenhouse RD over Towne Lake?

It is owned by the County Highway Agency.