US Bridges

Dement Road over UP RR & Riley Ditch

Fair

Ogle County, Illinois · SW Sec 20 T40N R2E · Structure no. 071601100000000

Built
2001
24 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
220 ft
3 main spans
Daily traffic
1,950
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Dement Road over UP RR & Riley Ditch is a prestressed concrete stringer/multi-beam or girder carrying Dement Road over UP RR & Riley Ditch in Ogle County, Illinois. It was built in 2001, so it is 24 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 1,950 vehicles a day, roughly 19% of them trucks, projected to reach 2,288 by 2046. The structure is 220 ft (67.2 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesDement Road
CrossesUP RR & Riley Ditch
LocationSW Sec 20 T40N R2E
RouteCity Street 0
CountyOgle County
StateIllinois
Coordinates41.92437, -89.03389
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length220 ft (67.2 m)
Longest span93 ft (28.3 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,950 (2022)
Projected traffic2,288 by 2046
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Dement Road over UP RR & Riley Ditch built?

It was built in 2001, making it 24 years old in 2025.

What condition is Dement Road over UP RR & Riley 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 March 2024.

How much traffic does Dement Road over UP RR & Riley Ditch carry?

About 1,950 vehicles per day (2022 count), of which roughly 19% are trucks.

How long is Dement Road over UP RR & Riley Ditch?

The structure is 220 ft (67.2 m) long with a longest span of 93 ft (28.3 m) and a deck 33 ft wide.

Who owns Dement Road over UP RR & Riley Ditch?

It is owned by the City or Municipal Highway Agency.