IH 37 SB over Loop 1604
FairBexar County, Texas · IH 37 @ Loop 1604 · Structure no. 150150007309092
- Built
- 1968
- 57 years old
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 250 ft
- 4 main spans
- Daily traffic
- 19,082
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
IH 37 SB over Loop 1604 is a steel continuous stringer/multi-beam or girder carrying IH 37 SB over Loop 1604 in Bexar County, Texas. It was built in 1968, so it is 57 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 19,082 vehicles a day, roughly 11% of them trucks, projected to reach 23,910 by 2036. The structure is 250 ft (76.2 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IH 37 SB over Loop 1604 built?
It was built in 1968, making it 57 years old in 2025.
What condition is IH 37 SB over Loop 1604 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 37 SB over Loop 1604 carry?
About 19,082 vehicles per day (2019 count), of which roughly 11% are trucks.
How long is IH 37 SB over Loop 1604?
The structure is 250 ft (76.2 m) long with a longest span of 75 ft (22.9 m) and a deck 42 ft wide.
Who owns IH 37 SB over Loop 1604?
It is owned by the State Highway Agency.