US Bridges

Ill 122 over Il Central RR Spur

Poor

Tazewell County, Illinois · In Delavan · Structure no. 090011100000000

Built
1975
50 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
148 ft
3 main spans
Daily traffic
1,750
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 122 over Il Central RR Spur is a steel continuous stringer/multi-beam or girder carrying Ill 122 over Il Central RR Spur in Tazewell County, Illinois. It was built in 1975, so it is 50 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,750 vehicles a day, roughly 10% of them trucks, projected to reach 1,970 by 2046. The structure is 148 ft (45.1 m) long and 38 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesIll 122
CrossesIl Central RR Spur
LocationIn Delavan
RouteState Highway 122
CountyTazewell County
StateIllinois
Coordinates40.3725, -89.54484
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating81 US tons
Inventory rating46.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length148 ft (45.1 m)
Longest span53 ft (16.2 m)
Deck width38 ft (11.7 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,750 (2023)
Projected traffic1,970 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed8.7 mi (14 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ill 122 over Il Central RR Spur built?

It was built in 1975, making it 50 years old in 2025.

What condition is Ill 122 over Il Central RR Spur in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

How much traffic does Ill 122 over Il Central RR Spur carry?

About 1,750 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Ill 122 over Il Central RR Spur?

The structure is 148 ft (45.1 m) long with a longest span of 53 ft (16.2 m) and a deck 38 ft wide.

Who owns Ill 122 over Il Central RR Spur?

It is owned by the State Highway Agency.