US Bridges

County HWY 1 over Chicago + N W R R

Good

Sangamon County, Illinois · 2.5 MI W Andrew · Structure no. 084302500000000

Built
1945
80 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
144 ft
3 main spans
Daily traffic
2,400
2022 count
Owner
County
County Highway Agency

About this bridge

County HWY 1 over Chicago + N W R R is a steel continuous stringer/multi-beam or girder carrying County HWY 1 over Chicago + N W R R in Sangamon County, Illinois. It was built in 1945, so it is 80 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 2,400 vehicles a day, roughly 4% of them trucks, projected to reach 2,576 by 2046. The structure is 144 ft (43.8 m) long and 34 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesCounty HWY 1
CrossesChicago + N W R R
Location2.5 MI W Andrew
RouteCounty Highway 0
CountySangamon County
StateIllinois
Coordinates39.89497, -89.70698
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.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating41.8 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length144 ft (43.8 m)
Longest span55 ft (16.7 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2022)
Projected traffic2,576 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was County HWY 1 over Chicago + N W R R built?

It was built in 1945, making it 80 years old in 2025.

What condition is County HWY 1 over Chicago + N W R R 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 March 2023.

How much traffic does County HWY 1 over Chicago + N W R R carry?

About 2,400 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is County HWY 1 over Chicago + N W R R?

The structure is 144 ft (43.8 m) long with a longest span of 55 ft (16.7 m) and a deck 34 ft wide.

Who owns County HWY 1 over Chicago + N W R R?

It is owned by the County Highway Agency.