US Bridges

IH 10 Conn over Drain

Fair

Bexar County, Texas · 0.11 MI E of IH 410 · Structure no. 150150002502204

Built
1964
61 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
130 ft
10 main spans
Daily traffic
12,825
2021 count
Owner
State
State Highway Agency

About this bridge

IH 10 Conn over Drain is a concrete culvert carrying IH 10 Conn over Drain in Bexar County, Texas. It was built in 1964, so it is 61 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 12,825 vehicles a day, roughly 22% of them trucks, projected to reach 5,150 by 2033. The structure is 130 ft (39.6 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIH 10 Conn
CrossesDrain
Location0.11 MI E of IH 410
RouteInterstate 10
StateTexas
Coordinates29.43741, -98.38865
Functional classUrban Principal Arterial - Interstate

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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans10
Design loadOther
Structure length130 ft (39.6 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,825 (2021)
Projected traffic5,150 by 2033
Trucks22%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 IH 10 Conn over Drain built?

It was built in 1964, making it 61 years old in 2025.

What condition is IH 10 Conn over Drain 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 2024.

How much traffic does IH 10 Conn over Drain carry?

About 12,825 vehicles per day (2021 count), of which roughly 22% are trucks.

How long is IH 10 Conn over Drain?

The structure is 130 ft (39.6 m) long with a longest span of 8 ft (2.4 m).

Who owns IH 10 Conn over Drain?

It is owned by the State Highway Agency.