US Bridges

US Route 150 over Coal Creek

Good

Rock Island County, Illinois · 1.4 MI SE JCT US 6 · Structure no. 081016400000000

Built
2005
20 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
94 ft
2 main spans
Daily traffic
9,250
2023 count
Owner
State
State Highway Agency

About this bridge

US Route 150 over Coal Creek is a steel continuous stringer/multi-beam or girder carrying US Route 150 over Coal Creek in Rock Island County, Illinois. It was built in 2005, so it is 20 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 9,250 vehicles a day, roughly 4% of them trucks, projected to reach 9,393 by 2046. The structure is 94 ft (28.7 m) long and 43 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesUS Route 150
CrossesCoal Creek
Location1.4 MI SE JCT US 6
RouteU.S. Route 150
Coordinates41.43574, -90.4771
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 alignment8: Equal to present desirable criteria
Operating rating94.7 US tons
Inventory rating56.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length94 ft (28.7 m)
Longest span46 ft (13.9 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,250 (2023)
Projected traffic9,393 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US Route 150 over Coal Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is US Route 150 over Coal 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 2023.

How much traffic does US Route 150 over Coal Creek carry?

About 9,250 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is US Route 150 over Coal Creek?

The structure is 94 ft (28.7 m) long with a longest span of 46 ft (13.9 m) and a deck 43 ft wide.

Who owns US Route 150 over Coal Creek?

It is owned by the State Highway Agency.