IH 45 Sb-Allen Ex over Buffalo Bayou/Sabine Con
FairHarris County, Texas · 0.10 MI N of Allen Pkwy · Structure no. 121020050003213
- Built
- 1962
- 63 years old
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 626 ft
- 3 main spans
- Daily traffic
- 21,580
- 2013 count
- Owner
- State
- State Highway Agency
About this bridge
IH 45 Sb-Allen Ex over Buffalo Bayou/Sabine Con is a steel continuous stringer/multi-beam or girder carrying IH 45 Sb-Allen Ex over Buffalo Bayou/Sabine Con in Harris County, Texas. It was built in 1962, so it is 63 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 5 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 21,580 vehicles a day, roughly 7% of them trucks, projected to reach 30,220 by 2033. The structure is 626 ft (190.8 m) long and 23 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IH 45 Sb-Allen Ex over Buffalo Bayou/Sabine Con built?
It was built in 1962, making it 63 years old in 2025.
What condition is IH 45 Sb-Allen Ex over Buffalo Bayou/Sabine Con 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 October 2024.
How much traffic does IH 45 Sb-Allen Ex over Buffalo Bayou/Sabine Con carry?
About 21,580 vehicles per day (2013 count), of which roughly 7% are trucks.
How long is IH 45 Sb-Allen Ex over Buffalo Bayou/Sabine Con?
The structure is 626 ft (190.8 m) long with a longest span of 90 ft (27.4 m) and a deck 23 ft wide.
Who owns IH 45 Sb-Allen Ex over Buffalo Bayou/Sabine Con?
It is owned by the State Highway Agency.