US Bridges

Holzwarth RD over Wunsche Ditch

Good

Harris County, Texas · 0.5 MI S of SH 99 · Structure no. 121020AA2429073

Built
2015
10 years old
Condition
Good
inspected December 2024
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
8,515
2021 count
Owner
County
County Highway Agency

About this bridge

Holzwarth RD over Wunsche Ditch is a concrete culvert carrying Holzwarth RD over Wunsche Ditch 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 8,515 vehicles a day, roughly 4% of them trucks, projected to reach 12,773 by 2042. The structure is 33 ft (10.1 m) long and 118 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHolzwarth RD
CrossesWunsche Ditch
Location0.5 MI S of SH 99
RouteCity Street 0
StateTexas
Coordinates30.08034, -95.45076
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2024
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 typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHL 93
Structure length33 ft (10.1 m)
Longest span8 ft (2.4 m)
Deck width118 ft (36 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,515 (2021)
Projected traffic12,773 by 2042
Trucks4%
Lanes on structure4
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 Holzwarth RD over Wunsche Ditch built?

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

What condition is Holzwarth RD over Wunsche Ditch 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 2024.

How much traffic does Holzwarth RD over Wunsche Ditch carry?

About 8,515 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Holzwarth RD over Wunsche Ditch?

The structure is 33 ft (10.1 m) long with a longest span of 8 ft (2.4 m) and a deck 118 ft wide.

Who owns Holzwarth RD over Wunsche Ditch?

It is owned by the County Highway Agency.