US Bridges

Il 84 over Drainage Ditch

Fair

Rock Island County, Illinois · 1.4 Mi. S. of I-80 · Structure no. 081202500000000

Built
1996
29 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
54 ft
4 main spans
Daily traffic
5,500
2023 count
Owner
State
State Highway Agency

About this bridge

Il 84 over Drainage Ditch is a concrete culvert carrying Il 84 over Drainage Ditch in Rock Island County, Illinois. It was built in 1996, so it is 29 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 5,500 vehicles a day, roughly 8% of them trucks, projected to reach 5,656 by 2046. The structure is 54 ft (16.4 m) long and 43 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesIl 84
CrossesDrainage Ditch
Location1.4 Mi. S. of I-80
RouteState Highway 84
CountyRock Island County
StateIllinois
Coordinates41.56894, -90.38879
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84.7 US tons
Inventory rating51 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length54 ft (16.4 m)
Longest span13 ft (4.1 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,500 (2023)
Projected traffic5,656 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 84 over Drainage Ditch built?

It was built in 1996, making it 29 years old in 2025.

What condition is Il 84 over Drainage Ditch 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 2024.

How much traffic does Il 84 over Drainage Ditch carry?

About 5,500 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Il 84 over Drainage Ditch?

The structure is 54 ft (16.4 m) long with a longest span of 13 ft (4.1 m) and a deck 43 ft wide.

Who owns Il 84 over Drainage Ditch?

It is owned by the State Highway Agency.