US Bridges

Ill 105(FAP 741) over I-72

Fair

Piatt County, Illinois · N of Monticello · Structure no. 074007100000000

Built
1975
50 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
255 ft
2 main spans
Daily traffic
5,250
2024 count
Owner
State
State Highway Agency

About this bridge

Ill 105(FAP 741) over I-72 is a steel continuous stringer/multi-beam or girder carrying Ill 105(FAP 741) over I-72 in Piatt 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 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 5,250 vehicles a day, roughly 8% of them trucks, projected to reach 5,303 by 2046. The structure is 255 ft (77.8 m) long and 68 ft wide.

CarriesIll 105(FAP 741)
CrossesI-72
LocationN of Monticello
RouteState Highway 105
Coordinates40.05305, -88.56617
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating27.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length255 ft (77.8 m)
Longest span106 ft (32.2 m)
Deck width68 ft (20.7 m)
Roadway width49 ft (14.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,250 (2024)
Projected traffic5,303 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 105(FAP 741) over I-72 built?

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

What condition is Ill 105(FAP 741) over I-72 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 Ill 105(FAP 741) over I-72 carry?

About 5,250 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Ill 105(FAP 741) over I-72?

The structure is 255 ft (77.8 m) long with a longest span of 106 ft (32.2 m) and a deck 68 ft wide.

Who owns Ill 105(FAP 741) over I-72?

It is owned by the State Highway Agency.