US Bridges

Milan Beltway over Rock River

Fair

Rock Island County, Illinois · S. of Rock Island · Structure no. 081015300000000

Built
2006
19 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,682 ft
11 main spans
Daily traffic
19,400
2023 count
Owner
State
State Highway Agency

About this bridge

Milan Beltway over Rock River is a steel continuous stringer/multi-beam or girder carrying Milan Beltway over Rock River in Rock Island County, Illinois. It was built in 2006, so it is 19 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 19,400 vehicles a day, roughly 5% of them trucks, projected to reach 19,089 by 2046. The structure is 1,682 ft (512.7 m) long and 104 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesMilan Beltway
CrossesRock River
LocationS. of Rock Island
CountyRock Island County
StateIllinois
Coordinates41.46215, -90.53728
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20 + Mod
Structure length1,682 ft (512.7 m)
Longest span164 ft (50 m)
Deck width104 ft (31.7 m)
Roadway width87 ft (26.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,400 (2023)
Projected traffic19,089 by 2046
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Milan Beltway over Rock River built?

It was built in 2006, making it 19 years old in 2025.

What condition is Milan Beltway over Rock River 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 July 2023.

How much traffic does Milan Beltway over Rock River carry?

About 19,400 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Milan Beltway over Rock River?

The structure is 1,682 ft (512.7 m) long with a longest span of 164 ft (50 m) and a deck 104 ft wide.

Who owns Milan Beltway over Rock River?

It is owned by the State Highway Agency.