US Bridges

Blockhouse Drive over Ditch

Good

Williamson County, Texas · 0.8 MI NE of US 183 · Structure no. 142460AA0705002

Built
1999
26 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
3,350
2020 count
Owner
County
County Highway Agency

About this bridge

Blockhouse Drive over Ditch is a prestressed concrete box beam or girders - multiple carrying Blockhouse Drive over Ditch in Williamson 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 3,350 vehicles a day, projected to reach 9,300 by 2036. The structure is 55 ft (16.8 m) long and 56 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesBlockhouse Drive
CrossesDitch
Location0.8 MI NE of US 183
RouteCounty Highway 0
CountyWilliamson County
StateTexas
Coordinates30.55126, -97.83125
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
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 length55 ft (16.8 m)
Longest span55 ft (16.8 m)
Deck width56 ft (17.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,350 (2020)
Projected traffic9,300 by 2036
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Blockhouse Drive over Ditch built?

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

What condition is Blockhouse Drive over 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 October 2023.

How much traffic does Blockhouse Drive over Ditch carry?

About 3,350 vehicles per day (2020 count).

How long is Blockhouse Drive over Ditch?

The structure is 55 ft (16.8 m) long with a longest span of 55 ft (16.8 m) and a deck 56 ft wide.

Who owns Blockhouse Drive over Ditch?

It is owned by the County Highway Agency.