US Bridges

Silicon DR over Drainage Ditch

Fair

Bexar County, Texas · 0.1 MI N of Dezavala RD · Structure no. 150150B31588001

Built
1997
28 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete
Length
59 ft
6 main spans
Daily traffic
26,927
2015 count
Owner
City
City or Municipal Highway Agency

About this bridge

Silicon DR over Drainage Ditch is a concrete culvert carrying Silicon DR over Drainage Ditch in Bexar County, Texas. It was built in 1997, so it is 28 years old, younger 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 26,927 vehicles a day, projected to reach 10,000 by 2038. The structure is 59 ft (18 m) long and 473 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSilicon DR
CrossesDrainage Ditch
Location0.1 MI N of Dezavala RD
RouteCity Street 0
CountyBexar County
StateTexas
Coordinates29.56385, -98.59353
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 typeCulvert
MaterialConcrete
DeckNot applicable
Main spans6
Design loadUnknown
Structure length59 ft (18 m)
Longest span9 ft (2.7 m)
Deck width473 ft (144.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,927 (2015)
Projected traffic10,000 by 2038
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Silicon DR over Drainage Ditch built?

It was built in 1997, making it 28 years old in 2025.

What condition is Silicon DR over Drainage Ditch 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 June 2023.

How much traffic does Silicon DR over Drainage Ditch carry?

About 26,927 vehicles per day (2015 count).

How long is Silicon DR over Drainage Ditch?

The structure is 59 ft (18 m) long with a longest span of 9 ft (2.7 m) and a deck 473 ft wide.

Who owns Silicon DR over Drainage Ditch?

It is owned by the City or Municipal Highway Agency.