Coll 7747 over Big Blue River
FairSaline County, Nebraska · 1N of Dewitt · Structure no. C007614710P
- Built
- 1984
- 41 years old
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 383 ft
- 4 main spans
- Daily traffic
- 225
- 1998 count
- Owner
- County
- County Highway Agency
About this bridge
Coll 7747 over Big Blue River is a steel continuous stringer/multi-beam or girder carrying Coll 7747 over Big Blue River in Saline County, Nebraska. It was built in 1984, so it is 41 years old, younger than the Nebraska average of 47.1 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 225 vehicles a day, projected to reach 225 by 2033. The structure is 383 ft (116.7 m) long and 30 ft wide. If it were closed, the detour would be 31.1 mi (50 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Coll 7747 over Big Blue River built?
It was built in 1984, making it 41 years old in 2025.
What condition is Coll 7747 over Big Blue 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 November 2024.
How much traffic does Coll 7747 over Big Blue River carry?
About 225 vehicles per day (1998 count).
How long is Coll 7747 over Big Blue River?
The structure is 383 ft (116.7 m) long with a longest span of 105 ft (32 m) and a deck 30 ft wide.
Who owns Coll 7747 over Big Blue River?
It is owned by the County Highway Agency.