US Bridges

Calder Avenue over Hillebrandt Bayou

FairPosted for load

Jefferson County, Texas · 2.0 MI E of SH 364 · Structure no. 201240B00170004

Built
1960
65 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete
Length
100 ft
4 main spans
Daily traffic
4,300
2015 count
Owner
City
City or Municipal Highway Agency

About this bridge

Calder Avenue over Hillebrandt Bayou is a concrete slab carrying Calder Avenue over Hillebrandt Bayou in Jefferson County, Texas. It was built in 1960, so it is 65 years old, older 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 4,300 vehicles a day, projected to reach 6,400 by 2035. The structure is 100 ft (30.5 m) long and 23 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCalder Avenue
CrossesHillebrandt Bayou
Location2.0 MI E of SH 364
RouteCity Street 13
CountyJefferson County
StateTexas
Coordinates30.08006, -94.16026
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length100 ft (30.5 m)
Longest span25 ft (7.6 m)
Deck width23 ft (7.1 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,300 (2015)
Projected traffic6,400 by 2035
Trucks0%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$5,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Calder Avenue over Hillebrandt Bayou built?

It was built in 1960, making it 65 years old in 2025.

What condition is Calder Avenue 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 Calder Avenue over Hillebrandt Bayou carry?

About 4,300 vehicles per day (2015 count).

How long is Calder Avenue over Hillebrandt Bayou?

The structure is 100 ft (30.5 m) long with a longest span of 25 ft (7.6 m) and a deck 23 ft wide.

Who owns Calder Avenue over Hillebrandt Bayou?

It is owned by the City or Municipal Highway Agency.