US Bridges

IH 410 EB over San Antonio River

Fair

Bexar County, Texas · 1.7 MI E of Spur 536 · Structure no. 150150052106159

Built
1965
60 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
422 ft
4 main spans
Daily traffic
17,600
2017 count
Owner
State
State Highway Agency

About this bridge

IH 410 EB over San Antonio River is a steel continuous stringer/multi-beam or girder carrying IH 410 EB over San Antonio River in Bexar County, Texas. It was built in 1965, so it is 60 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 17,600 vehicles a day, roughly 9% of them trucks, projected to reach 24,950 by 2033. The structure is 422 ft (128.6 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIH 410 EB
CrossesSan Antonio River
Location1.7 MI E of Spur 536
RouteInterstate 410
StateTexas
Coordinates29.32175, -98.4495
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 rating68 US tons
Inventory rating41 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+2 approach)
Design loadHS 20
Structure length422 ft (128.6 m)
Longest span90 ft (27.4 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,600 (2017)
Projected traffic24,950 by 2033
Trucks9%
Lanes on structure2
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 410 EB over San Antonio River built?

It was built in 1965, making it 60 years old in 2025.

What condition is IH 410 EB over San Antonio River 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 2024.

How much traffic does IH 410 EB over San Antonio River carry?

About 17,600 vehicles per day (2017 count), of which roughly 9% are trucks.

How long is IH 410 EB over San Antonio River?

The structure is 422 ft (128.6 m) long with a longest span of 90 ft (27.4 m) and a deck 33 ft wide.

Who owns IH 410 EB over San Antonio River?

It is owned by the State Highway Agency.