US Bridges

Il 26 over 3 Mile Branch

Good

Lee County, Illinois · 2.9 Mi. N. of US 30 · Structure no. 052007100000000

Built
2000
25 years old
Condition
Good
inspected October 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
80 ft
1 main span
Daily traffic
2,050
2023 count
Owner
State
State Highway Agency

About this bridge

Il 26 over 3 Mile Branch is a steel stringer/multi-beam or girder carrying Il 26 over 3 Mile Branch in Lee County, Illinois. It was built in 2000, so it is 25 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,050 vehicles a day, roughly 18% of them trucks, projected to reach 2,374 by 2046. The structure is 80 ft (24.4 m) long and 39 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesIl 26
Crosses3 Mile Branch
Location2.9 Mi. N. of US 30
RouteState Highway 26
CountyLee County
StateIllinois
Coordinates41.79949, -89.46286
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.3 US tons
Inventory rating38.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span77 ft (23.6 m)
Deck width39 ft (11.8 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,050 (2023)
Projected traffic2,374 by 2046
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Il 26 over 3 Mile Branch built?

It was built in 2000, making it 25 years old in 2025.

What condition is Il 26 over 3 Mile Branch 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 October 2022.

How much traffic does Il 26 over 3 Mile Branch carry?

About 2,050 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is Il 26 over 3 Mile Branch?

The structure is 80 ft (24.4 m) long with a longest span of 77 ft (23.6 m) and a deck 39 ft wide.

Who owns Il 26 over 3 Mile Branch?

It is owned by the State Highway Agency.