US Bridges

Southfork DR EB over Detention Ditch

Good

Brazoria County, Texas · 0.25MI W of Old Choc Byu · Structure no. 120200AA2006002

Built
2011
14 years old
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
1,500
2011 count
Owner
County
County Highway Agency

About this bridge

Southfork DR EB over Detention Ditch is a prestressed concrete box beam or girders - multiple carrying Southfork DR EB over Detention Ditch in Brazoria County, Texas. It was built in 2011, so it is 14 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 1,500 vehicles a day, projected to reach 3,000 by 2031. The structure is 45 ft (13.7 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSouthfork DR EB
CrossesDetention Ditch
Location0.25MI W of Old Choc Byu
RouteCounty Highway 648
CountyBrazoria County
StateTexas
Coordinates29.5421, -95.35185
Functional classRural Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length45 ft (13.7 m)
Longest span43 ft (13.1 m)
Deck width32 ft (9.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2011)
Projected traffic3,000 by 2031
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Southfork DR EB over Detention Ditch built?

It was built in 2011, making it 14 years old in 2025.

What condition is Southfork DR EB over Detention 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 August 2023.

How much traffic does Southfork DR EB over Detention Ditch carry?

About 1,500 vehicles per day (2011 count).

How long is Southfork DR EB over Detention Ditch?

The structure is 45 ft (13.7 m) long with a longest span of 43 ft (13.1 m) and a deck 32 ft wide.

Who owns Southfork DR EB over Detention Ditch?

It is owned by the County Highway Agency.