US Bridges

Mt Prospect RD over Wellers Ditch

Fair

Cook County, Illinois · 0.2 M N Ill 58 P11 · Structure no. 016305100000000

Built
1947
78 years old, rebuilt 1986
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
15,500
2022 count
Owner
County
County Highway Agency

About this bridge

Mt Prospect RD over Wellers Ditch is a prestressed concrete box beam or girders - multiple carrying Mt Prospect RD over Wellers Ditch in Cook County, Illinois. It was built in 1947 and reconstructed in 1986, so it is 78 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 15,500 vehicles a day, roughly 6% of them trucks, projected to reach 16,463 by 2046. The structure is 56 ft (17 m) long and 68 ft wide.

Location

Open in Google Maps
CarriesMt Prospect RD
CrossesWellers Ditch
Location0.2 M N Ill 58 P11
CountyCook County
StateIllinois
Coordinates42.05149, -87.92122
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating34.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length56 ft (17 m)
Longest span51 ft (15.6 m)
Deck width68 ft (20.7 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,500 (2022)
Projected traffic16,463 by 2046
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mt Prospect RD over Wellers Ditch built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1986.

What condition is Mt Prospect RD over Wellers 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 July 2023.

How much traffic does Mt Prospect RD over Wellers Ditch carry?

About 15,500 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Mt Prospect RD over Wellers Ditch?

The structure is 56 ft (17 m) long with a longest span of 51 ft (15.6 m) and a deck 68 ft wide.

Who owns Mt Prospect RD over Wellers Ditch?

It is owned by the County Highway Agency.