US Bridges

Old US 36 over 7th St. Ramp (nb)

Good

Sangamon County, Illinois · S Edge Riverton · Structure no. 084005300000000

Built
1958
67 years old, rebuilt 2006
Condition
Good
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
130 ft
3 main spans
Daily traffic
2,150
2023 count
Owner
State
State Highway Agency

About this bridge

Old US 36 over 7th St. Ramp (nb) is a steel continuous stringer/multi-beam or girder carrying Old US 36 over 7th St. Ramp (nb) in Sangamon County, Illinois. It was built in 1958 and reconstructed in 2006, so it is 67 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 2,150 vehicles a day, roughly 12% of them trucks, projected to reach 2,172 by 2046. The structure is 130 ft (39.5 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesOld US 36
Crosses7th St. Ramp (nb)
LocationS Edge Riverton
CountySangamon County
StateIllinois
Coordinates39.84086, -89.53926
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.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating59.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length130 ft (39.5 m)
Longest span46 ft (14 m)
Deck width37 ft (11.2 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,150 (2023)
Projected traffic2,172 by 2046
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Old US 36 over 7th St. Ramp (nb) built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2006.

What condition is Old US 36 over 7th St. Ramp (nb) 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 February 2025.

How much traffic does Old US 36 over 7th St. Ramp (nb) carry?

About 2,150 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is Old US 36 over 7th St. Ramp (nb)?

The structure is 130 ft (39.5 m) long with a longest span of 46 ft (14 m) and a deck 37 ft wide.

Who owns Old US 36 over 7th St. Ramp (nb)?

It is owned by the State Highway Agency.