US Bridges

Holzwarth RD SB over Union Pacific Railroad

Good

Harris County, Texas · 0.05 MI S of SH 99 · Structure no. 121020A32506011

Built
2016
9 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
271 ft
2 main spans
Daily traffic
2,000
2016 count
Owner
County
County Highway Agency

About this bridge

Holzwarth RD SB over Union Pacific Railroad is a prestressed concrete stringer/multi-beam or girder carrying Holzwarth RD SB over Union Pacific Railroad in Harris County, Texas. It was built in 2016, so it is 9 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 2,000 vehicles a day, projected to reach 4,000 by 2036. The structure is 271 ft (82.6 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesHolzwarth RD SB
CrossesUnion Pacific Railroad
Location0.05 MI S of SH 99
RouteCounty Highway 0
CountyHarris County
StateTexas
Coordinates30.08663, -95.45081
Functional classRural Major Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
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, precast panels
Main spans2 (+1 approach)
Design loadHL 93
Structure length271 ft (82.6 m)
Longest span115 ft (35.1 m)
Deck width28 ft (8.4 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2016)
Projected traffic4,000 by 2036
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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 SB over Union Pacific Railroad built?

It was built in 2016, making it 9 years old in 2025.

What condition is Holzwarth RD SB over Union Pacific Railroad 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 October 2023.

How much traffic does Holzwarth RD SB over Union Pacific Railroad carry?

About 2,000 vehicles per day (2016 count).

How long is Holzwarth RD SB over Union Pacific Railroad?

The structure is 271 ft (82.6 m) long with a longest span of 115 ft (35.1 m) and a deck 28 ft wide.

Who owns Holzwarth RD SB over Union Pacific Railroad?

It is owned by the County Highway Agency.