US Bridges

Township RD 1100E over Il 336

Fair

McDonough County, Illinois · 1.08MI W of US 67 · Structure no. 055007800000000

Built
2015
10 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
212 ft
2 main spans
Daily traffic
125
2021 count
Owner
State
State Highway Agency

About this bridge

Township RD 1100E over Il 336 is a steel continuous stringer/multi-beam or girder carrying Township RD 1100E over Il 336 in McDonough County, Illinois. It was built in 2015, so it is 10 years old, younger 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 125 vehicles a day, roughly 6% of them trucks, projected to reach 126 by 2046. The structure is 212 ft (64.6 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesTownship RD 1100E
CrossesIl 336
Location1.08MI W of US 67
RouteCounty Highway 0
CountyMcDonough County
StateIllinois
Coordinates40.50326, -90.69454
Functional classRural Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating67.9 US tons
Inventory rating52.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length212 ft (64.6 m)
Longest span108 ft (32.9 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2021)
Projected traffic126 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 Township RD 1100E over Il 336 built?

It was built in 2015, making it 10 years old in 2025.

What condition is Township RD 1100E over Il 336 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 2023.

How much traffic does Township RD 1100E over Il 336 carry?

About 125 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is Township RD 1100E over Il 336?

The structure is 212 ft (64.6 m) long with a longest span of 108 ft (32.9 m) and a deck 33 ft wide.

Who owns Township RD 1100E over Il 336?

It is owned by the State Highway Agency.