US Bridges

Hillebrandt RD over Hillebrandt Bayou

Fair

Jefferson County, Texas · 1.1 MI N of FM 365 · Structure no. 201240AA0328001

Built
2010
15 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
450 ft
9 main spans
Daily traffic
653
2022 count
Owner
County
County Highway Agency

About this bridge

Hillebrandt RD over Hillebrandt Bayou is a prestressed concrete stringer/multi-beam or girder carrying Hillebrandt RD over Hillebrandt Bayou in Jefferson County, Texas. It was built in 2010, so it is 15 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 653 vehicles a day, projected to reach 1,110 by 2035. The structure is 450 ft (137.2 m) long and 30 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesHillebrandt RD
CrossesHillebrandt Bayou
Location1.1 MI N of FM 365
RouteCounty Highway 0
CountyJefferson County
StateTexas
Coordinates29.92885, -94.11009
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal 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 spans9
Design loadHL 93
Structure length450 ft (137.2 m)
Longest span50 ft (15.2 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic653 (2022)
Projected traffic1,110 by 2035
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$46,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Hillebrandt RD over Hillebrandt Bayou built?

It was built in 2010, making it 15 years old in 2025.

What condition is Hillebrandt RD over Hillebrandt Bayou 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 July 2023.

How much traffic does Hillebrandt RD over Hillebrandt Bayou carry?

About 653 vehicles per day (2022 count).

How long is Hillebrandt RD over Hillebrandt Bayou?

The structure is 450 ft (137.2 m) long with a longest span of 50 ft (15.2 m) and a deck 30 ft wide.

Who owns Hillebrandt RD over Hillebrandt Bayou?

It is owned by the County Highway Agency.