US Bridges

IH 35 Ml & FR over Drainage Ditch

Good

Bexar County, Texas · 2.05 MI S of SH 218 · Structure no. 150150001607160

Built
1957
68 years old, rebuilt 1984
Condition
Good
inspected May 2024
Type
Culvert
Concrete
Length
31 ft
4 main spans
Daily traffic
223,597
2022 count
Owner
State
State Highway Agency

About this bridge

IH 35 Ml & FR over Drainage Ditch is a concrete culvert carrying IH 35 Ml & FR over Drainage Ditch in Bexar County, Texas. It was built in 1957 and reconstructed in 1984, so it is 68 years old, older 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 223,597 vehicles a day, roughly 10% of them trucks, projected to reach 313,036 by 2042. The structure is 31 ft (9.4 m) long and 300 ft wide.

CarriesIH 35 Ml & FR
CrossesDrainage Ditch
Location2.05 MI S of SH 218
RouteInterstate 35
StateTexas
Coordinates29.54703, -98.36636
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMay 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 spans4
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span6 ft (1.8 m)
Deck width300 ft (91.4 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic223,597 (2022)
Projected traffic313,036 by 2042
Trucks10%
Lanes on structure15
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 35 Ml & FR over Drainage Ditch built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1984.

What condition is IH 35 Ml & FR over Drainage 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 May 2024.

How much traffic does IH 35 Ml & FR over Drainage Ditch carry?

About 223,597 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is IH 35 Ml & FR over Drainage Ditch?

The structure is 31 ft (9.4 m) long with a longest span of 6 ft (1.8 m) and a deck 300 ft wide.

Who owns IH 35 Ml & FR over Drainage Ditch?

It is owned by the State Highway Agency.