US Bridges

San Pedro Ave over Drainage Ditch

Fair

Bexar County, Texas · 0.50 MI S of Lp 410 · Structure no. 150150B30500016

Built
1934
91 years old, rebuilt 1975
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
27 ft
3 main spans
Daily traffic
31,775
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

San Pedro Ave over Drainage Ditch is a concrete culvert carrying San Pedro Ave over Drainage Ditch in Bexar County, Texas. It was built in 1934 and reconstructed in 1975, so it is 91 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 31,775 vehicles a day, roughly 2% of them trucks, projected to reach 37,990 by 2039. The structure is 27 ft (8.2 m) long and 102 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSan Pedro Ave
CrossesDrainage Ditch
Location0.50 MI S of Lp 410
RouteCity Street 0
CountyBexar County
StateTexas
Coordinates29.51124, -98.49927
Functional classUrban Other Principal Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to 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 length27 ft (8.2 m)
Longest span8 ft (2.4 m)
Deck width102 ft (31.1 m)
Roadway width88 ft (26.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,775 (2020)
Projected traffic37,990 by 2039
Trucks2%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 San Pedro Ave over Drainage Ditch built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1975.

What condition is San Pedro Ave 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 San Pedro Ave over Drainage Ditch carry?

About 31,775 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is San Pedro Ave over Drainage Ditch?

The structure is 27 ft (8.2 m) long with a longest span of 8 ft (2.4 m) and a deck 102 ft wide.

Who owns San Pedro Ave over Drainage Ditch?

It is owned by the City or Municipal Highway Agency.