US Bridges

FAS 1645 (il 123) over Ditch

Good

Sangamon County, Illinois · 0.30 MI E Il 29 · Structure no. 084252500000000

Built
2021
4 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
2,450
2023 count
Owner
State
State Highway Agency

About this bridge

FAS 1645 (il 123) over Ditch is a concrete culvert carrying FAS 1645 (il 123) over Ditch in Sangamon County, Illinois. It was built in 2021, so it is 4 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,450 vehicles a day, roughly 8% of them trucks, projected to reach 2,172 by 2046. The structure is 24 ft (7.2 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesFAS 1645 (il 123)
CrossesDitch
Location0.30 MI E Il 29
RouteState Highway 123
CountySangamon County
StateIllinois
Coordinates39.96095, -89.67431
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection9 ExcellentNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating71.8 US tons
Inventory rating55.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length24 ft (7.2 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,450 (2023)
Projected traffic2,172 by 2046
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 1645 (il 123) over Ditch built?

It was built in 2021, making it 4 years old in 2025.

What condition is FAS 1645 (il 123) over Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does FAS 1645 (il 123) over Ditch carry?

About 2,450 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is FAS 1645 (il 123) over Ditch?

The structure is 24 ft (7.2 m) long with a longest span of 11 ft (3.3 m).

Who owns FAS 1645 (il 123) over Ditch?

It is owned by the State Highway Agency.