US Bridges

W State Line Road over Indian Creek

Good

Stephenson County, Illinois · 1.20 Mi. W Ill 73 · Structure no. 089305000000000

Built
1956
69 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
150
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

W State Line Road over Indian Creek is a steel stringer/multi-beam or girder carrying W State Line Road over Indian Creek in Stephenson County, Illinois. It was built in 1956, so it is 69 years old, older 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 150 vehicles a day, roughly 10% of them trucks, projected to reach 202 by 2046. The structure is 40 ft (12.2 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesW State Line Road
CrossesIndian Creek
Location1.20 Mi. W Ill 73
RouteCounty Highway 0
Coordinates42.5057, -89.82756
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
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 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 rating45.7 US tons
Inventory rating30 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span39 ft (11.9 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2024)
Projected traffic202 by 2046
Trucks10%
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

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 W State Line Road over Indian Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is W State Line Road over Indian 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 W State Line Road over Indian Creek carry?

About 150 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is W State Line Road over Indian Creek?

The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 28 ft wide.

Who owns W State Line Road over Indian Creek?

It is owned by the Town or Township Highway Agency.