US Bridges

85 TH Ave W over Warren Creek

Good

Rock Island County, Illinois · 3 MI W of Milan · Structure no. 081309900000000

Built
1985
40 years old
Condition
Good
inspected October 2021
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
62 ft
1 main span
Daily traffic
900
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

85 TH Ave W over Warren Creek is a prestressed concrete box beam or girders - multiple carrying 85 TH Ave W over Warren Creek in Rock Island County, Illinois. It was built in 1985, so it is 40 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 900 vehicles a day, roughly 18% of them trucks, projected to reach 909 by 2046. The structure is 62 ft (18.9 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
Carries85 TH Ave W
CrossesWarren Creek
Location3 MI W of Milan
CountyRock Island County
StateIllinois
Coordinates41.43596, -90.63089
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than 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 length62 ft (18.9 m)
Longest span59 ft (18 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic900 (2020)
Projected traffic909 by 2046
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 85 TH Ave W over Warren Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is 85 TH Ave W over Warren Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2021.

How much traffic does 85 TH Ave W over Warren Creek carry?

About 900 vehicles per day (2020 count), of which roughly 18% are trucks.

How long is 85 TH Ave W over Warren Creek?

The structure is 62 ft (18.9 m) long with a longest span of 59 ft (18 m) and a deck 28 ft wide.

Who owns 85 TH Ave W over Warren Creek?

It is owned by the City or Municipal Highway Agency.