US Bridges

SH 6 over Drainage Ditch

Good

Galveston County, Texas · 1.0 MI W of IH 45 · Structure no. 120850019204022

Built
1999
26 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
9,393
2020 count
Owner
State
State Highway Agency

About this bridge

SH 6 over Drainage Ditch is a concrete culvert carrying SH 6 over Drainage Ditch in Galveston County, Texas. It was built in 1999, so it is 26 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 9,393 vehicles a day, roughly 6% of them trucks, projected to reach 11,860 by 2033. The structure is 23 ft (7 m) long and 85 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSH 6
CrossesDrainage Ditch
Location1.0 MI W of IH 45
RouteState Highway 6
StateTexas
Coordinates29.33197, -94.94982
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width85 ft (26 m)
Roadway width83 ft (25.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,393 (2020)
Projected traffic11,860 by 2033
Trucks6%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SH 6 over Drainage Ditch built?

It was built in 1999, making it 26 years old in 2025.

What condition is SH 6 over Drainage Ditch 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 November 2024.

How much traffic does SH 6 over Drainage Ditch carry?

About 9,393 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is SH 6 over Drainage Ditch?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 85 ft wide.

Who owns SH 6 over Drainage Ditch?

It is owned by the State Highway Agency.