US Bridges

Ch 16 Rock Island over UP RR

Fair

Lee County, Illinois · 0.5 MI SW Dixon · Structure no. 052328100000000

Built
1955
70 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
62 ft
1 main span
Daily traffic
2,150
2022 count
Owner
County
County Highway Agency

About this bridge

Ch 16 Rock Island over UP RR is a steel stringer/multi-beam or girder carrying Ch 16 Rock Island over UP RR in Lee County, Illinois. It was built in 1955, so it is 70 years old, older 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 5 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 2,150 vehicles a day, roughly 8% of them trucks, projected to reach 2,727 by 2046. The structure is 62 ft (19 m) long and 33 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesCh 16 Rock Island
CrossesUP RR
Location0.5 MI SW Dixon
RouteCounty Highway 0
CountyLee County
StateIllinois
Coordinates41.82789, -89.51522
Functional classUrban Minor 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.5 US tons
Inventory rating22.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length62 ft (19 m)
Longest span56 ft (17.2 m)
Deck width33 ft (10.2 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,150 (2022)
Projected traffic2,727 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed16.2 mi (26 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ch 16 Rock Island over UP RR built?

It was built in 1955, making it 70 years old in 2025.

What condition is Ch 16 Rock Island over UP RR 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 February 2024.

How much traffic does Ch 16 Rock Island over UP RR carry?

About 2,150 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Ch 16 Rock Island over UP RR?

The structure is 62 ft (19 m) long with a longest span of 56 ft (17.2 m) and a deck 33 ft wide.

Who owns Ch 16 Rock Island over UP RR?

It is owned by the County Highway Agency.