US Bridges

N Onslow ST over Drainage Ditch

Fair

Bexar County, Texas · 0.24 MI N of E Houston ST · Structure no. 150150B25675001

Built
1976
49 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
497
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

N Onslow ST over Drainage Ditch is a concrete culvert carrying N Onslow ST over Drainage Ditch in Bexar County, Texas. It was built in 1976, so it is 49 years old, older 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 497 vehicles a day, projected to reach 1,278 by 2042. The structure is 33 ft (10.1 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesN Onslow ST
CrossesDrainage Ditch
Location0.24 MI N of E Houston ST
RouteCity Street 0
CountyBexar County
StateTexas
Coordinates29.42847, -98.44386
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 protection7 GoodSome minor problems.
Culvert6 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 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 typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length33 ft (10.1 m)
Longest span10 ft (3 m)
Deck width50 ft (15.2 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic497 (2020)
Projected traffic1,278 by 2042
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N Onslow ST over Drainage Ditch built?

It was built in 1976, making it 49 years old in 2025.

What condition is N Onslow ST 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 August 2023.

How much traffic does N Onslow ST over Drainage Ditch carry?

About 497 vehicles per day (2020 count).

How long is N Onslow ST over Drainage Ditch?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m) and a deck 50 ft wide.

Who owns N Onslow ST over Drainage Ditch?

It is owned by the City or Municipal Highway Agency.