US Bridges

N Circuit DR over Hillebrandt Bayou

FairPosted for load

Jefferson County, Texas · 0.05 MI W of Belvedere ST · Structure no. 201240B00253001

Built
1956
69 years old, rebuilt 1966
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
81 ft
2 main spans
Daily traffic
3,510
2015 count
Owner
City
City or Municipal Highway Agency

About this bridge

N Circuit DR over Hillebrandt Bayou is a concrete stringer/multi-beam or girder carrying N Circuit DR over Hillebrandt Bayou in Jefferson County, Texas. It was built in 1956 and reconstructed in 1966, so it is 69 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 3,510 vehicles a day, projected to reach 5,200 by 2035. The structure is 81 ft (24.7 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesN Circuit DR
CrossesHillebrandt Bayou
Location0.05 MI W of Belvedere ST
RouteCity Street 0
CountyJefferson County
StateTexas
Coordinates30.08923, -94.16429
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2 (+1 approach)
Design loadOther
Structure length81 ft (24.7 m)
Longest span30 ft (9.1 m)
Deck width31 ft (9.5 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,510 (2015)
Projected traffic5,200 by 2035
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 N Circuit DR over Hillebrandt Bayou built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1966.

What condition is N Circuit DR 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 N Circuit DR over Hillebrandt Bayou carry?

About 3,510 vehicles per day (2015 count).

How long is N Circuit DR over Hillebrandt Bayou?

The structure is 81 ft (24.7 m) long with a longest span of 30 ft (9.1 m) and a deck 31 ft wide.

Who owns N Circuit DR over Hillebrandt Bayou?

It is owned by the City or Municipal Highway Agency.