US Bridges

Milan Beltway over Mill Creek

Fair

Rock Island County, Illinois · 1.0 M S of Milan · Structure no. 081308400000000

Built
1981
44 years old
Condition
Fair
inspected December 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
196 ft
3 main spans
Daily traffic
8,400
2020 count
Owner
County
County Highway Agency

About this bridge

Milan Beltway over Mill Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Milan Beltway over Mill Creek in Rock Island County, Illinois. It was built in 1981, so it is 44 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 8,400 vehicles a day, roughly 4% of them trucks, projected to reach 8,484 by 2046. The structure is 196 ft (59.7 m) long and 86 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesMilan Beltway
CrossesMill Creek
Location1.0 M S of Milan
CountyRock Island County
StateIllinois
Coordinates41.43019, -90.55077
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating57.5 US tons
Inventory rating34.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length196 ft (59.7 m)
Longest span65 ft (19.8 m)
Deck width86 ft (26.2 m)
Roadway width83 ft (25.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,400 (2020)
Projected traffic8,484 by 2046
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Milan Beltway over Mill Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Milan Beltway over Mill Creek 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 December 2022.

How much traffic does Milan Beltway over Mill Creek carry?

About 8,400 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Milan Beltway over Mill Creek?

The structure is 196 ft (59.7 m) long with a longest span of 65 ft (19.8 m) and a deck 86 ft wide.

Who owns Milan Beltway over Mill Creek?

It is owned by the County Highway Agency.