US 29 SB over Is 70
FairHoward County, Maryland · 0.44 Mile South of Md 99 · Structure no. 100000130048012
- Built
- 1966
- 59 years old, rebuilt 2009
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 242 ft
- 4 main spans
- Daily traffic
- 10,111
- 2012 count
- Owner
- State
- State Highway Agency
About this bridge
US 29 SB over Is 70 is a steel stringer/multi-beam or girder carrying US 29 SB over Is 70 in Howard County, Maryland. It was built in 1966 and reconstructed in 2009, so it is 59 years old, older than the Maryland average of 52.6 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 10,111 vehicles a day, roughly 8% of them trucks, projected to reach 13,145 by 2032. The structure is 242 ft (73.8 m) long and 49 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 29 SB over Is 70 built?
It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2009.
What condition is US 29 SB over Is 70 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 September 2024.
How much traffic does US 29 SB over Is 70 carry?
About 10,111 vehicles per day (2012 count), of which roughly 8% are trucks.
How long is US 29 SB over Is 70?
The structure is 242 ft (73.8 m) long with a longest span of 86 ft (26.2 m) and a deck 49 ft wide.
Who owns US 29 SB over Is 70?
It is owned by the State Highway Agency.