US Bridges

9th Ave SB over Main B Canal

Good

Jefferson County, Texas · 1.0 MI E of FM 365 · Structure no. 201240C01535020

Built
1993
32 years old
Condition
Good
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
86 ft
1 main span
Daily traffic
5,912
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

9th Ave SB over Main B Canal is a prestressed concrete box beam or girders - multiple carrying 9th Ave SB over Main B Canal in Jefferson County, Texas. It was built in 1993, so it is 32 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 5,912 vehicles a day, projected to reach 13,540 by 2035. The structure is 86 ft (26.2 m) long and 36 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
Carries9th Ave SB
CrossesMain B Canal
Location1.0 MI E of FM 365
RouteCity Street 0
CountyJefferson County
StateTexas
Coordinates29.94569, -93.97378
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length86 ft (26.2 m)
Longest span86 ft (26.2 m)
Deck width36 ft (11.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,912 (2022)
Projected traffic13,540 by 2035
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

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

Frequently asked questions

When was 9th Ave SB over Main B Canal built?

It was built in 1993, making it 32 years old in 2025.

What condition is 9th Ave SB over Main B Canal 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 July 2023.

How much traffic does 9th Ave SB over Main B Canal carry?

About 5,912 vehicles per day (2022 count).

How long is 9th Ave SB over Main B Canal?

The structure is 86 ft (26.2 m) long with a longest span of 86 ft (26.2 m) and a deck 36 ft wide.

Who owns 9th Ave SB over Main B Canal?

It is owned by the City or Municipal Highway Agency.