US Bridges

US 45 over Drainage Ditch

Good

Iroquois County, Illinois · 0.39 MI S of US 24 · Structure no. 038021100000000

Built
2004
21 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
89 ft
1 main span
Daily traffic
3,000
2023 count
Owner
State
State Highway Agency

About this bridge

US 45 over Drainage Ditch is a steel stringer/multi-beam or girder carrying US 45 over Drainage Ditch in Iroquois County, Illinois. It was built in 2004, so it is 21 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 3,000 vehicles a day, roughly 9% of them trucks, projected to reach 2,677 by 2046. The structure is 89 ft (27.1 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUS 45
CrossesDrainage Ditch
Location0.39 MI S of US 24
RouteU.S. Route 45
Coordinates40.74686, -87.99631
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum 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 rating72.9 US tons
Inventory rating43.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length89 ft (27.1 m)
Longest span87 ft (26.4 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,000 (2023)
Projected traffic2,677 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 US 45 over Drainage Ditch built?

It was built in 2004, making it 21 years old in 2025.

What condition is US 45 over Drainage 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 December 2024.

How much traffic does US 45 over Drainage Ditch carry?

About 3,000 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is US 45 over Drainage Ditch?

The structure is 89 ft (27.1 m) long with a longest span of 87 ft (26.4 m) and a deck 39 ft wide.

Who owns US 45 over Drainage Ditch?

It is owned by the State Highway Agency.