US Bridges

40th Ave Court over Unnamed Creek

Fair

Rock Island County, Illinois · 190 Ft W 17th St-Ri · Structure no. 081630000000000

Built
1981
44 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
69 ft
1 main span
Daily traffic
50
2010 count
Owner
City
City or Municipal Highway Agency

About this bridge

40th Ave Court over Unnamed Creek is a prestressed concrete box beam or girders - multiple carrying 40th Ave Court over Unnamed Creek in Rock Island County, Illinois. It was built in 1981, so it is 44 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 50 vehicles a day, projected to reach 51 by 2046. The structure is 69 ft (21 m) long and 31 ft wide.

Location

Open in Google Maps
Carries40th Ave Court
CrossesUnnamed Creek
Location190 Ft W 17th St-Ri
RouteCity Street 0
CountyRock Island County
StateIllinois
Coordinates41.47037, -90.56795
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum 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 length69 ft (21 m)
Longest span66 ft (20.1 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2010)
Projected traffic51 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 40th Ave Court over Unnamed Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is 40th Ave Court over Unnamed Creek 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 October 2023.

How much traffic does 40th Ave Court over Unnamed Creek carry?

About 50 vehicles per day (2010 count).

How long is 40th Ave Court over Unnamed Creek?

The structure is 69 ft (21 m) long with a longest span of 66 ft (20.1 m) and a deck 31 ft wide.

Who owns 40th Ave Court over Unnamed Creek?

It is owned by the City or Municipal Highway Agency.