US Bridges

Normal Ave over Auburn Park Lagoon

Fair

Cook County, Illinois · 7850S 500W · Structure no. 016650300000000

Built
1923
102 years old, rebuilt 1997
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
27 ft
1 main span
Daily traffic
500
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Normal Ave over Auburn Park Lagoon is a prestressed concrete box beam or girders - multiple carrying Normal Ave over Auburn Park Lagoon in Cook County, Illinois. It was built in 1923 and reconstructed in 1997, so it is 102 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 500 vehicles a day, roughly 8% of them trucks, projected to reach 707 by 2046. The structure is 27 ft (8.2 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNormal Ave
CrossesAuburn Park Lagoon
Location7850S 500W
RouteCity Street 0
CountyCook County
StateIllinois
Coordinates41.7524, -87.63677
Functional classUrban Local

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.
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 inspectionJune 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span25 ft (7.6 m)
Deck width35 ft (10.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2022)
Projected traffic707 by 2046
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$161,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Normal Ave over Auburn Park Lagoon built?

It was built in 1923, making it 102 years old in 2025. It was reconstructed in 1997.

What condition is Normal Ave over Auburn Park Lagoon 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 June 2023.

How much traffic does Normal Ave over Auburn Park Lagoon carry?

About 500 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Normal Ave over Auburn Park Lagoon?

The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.6 m) and a deck 35 ft wide.

Who owns Normal Ave over Auburn Park Lagoon?

It is owned by the City or Municipal Highway Agency.