US-51NB (fap 710AL over Il 105(FAP 712)
FairMacon County, Illinois · In Decatur · Structure no. 058000800000000
- Built
- 1963
- 62 years old, rebuilt 1991
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 139 ft
- 3 main spans
- Daily traffic
- 7,500
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US-51NB (fap 710AL over Il 105(FAP 712) is a steel continuous stringer/multi-beam or girder carrying US-51NB (fap 710AL over Il 105(FAP 712) in Macon County, Illinois. It was built in 1963 and reconstructed in 1991, so it is 62 years old, older than the Illinois average of 45.3 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 7,500 vehicles a day, roughly 2% of them trucks, projected to reach 7,979 by 2046. The structure is 139 ft (42.5 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-51NB (fap 710AL over Il 105(FAP 712) built?
It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1991.
What condition is US-51NB (fap 710AL over Il 105(FAP 712) 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-51NB (fap 710AL over Il 105(FAP 712) carry?
About 7,500 vehicles per day (2023 count), of which roughly 2% are trucks.
How long is US-51NB (fap 710AL over Il 105(FAP 712)?
The structure is 139 ft (42.5 m) long with a longest span of 56 ft (17.2 m) and a deck 33 ft wide.
Who owns US-51NB (fap 710AL over Il 105(FAP 712)?
It is owned by the State Highway Agency.