US Bridges

Curran RD (tr 156) over I- 72 / US 36

Good

Sangamon County, Illinois · 1.1M W Wabash Intchg · Structure no. 084014600000000

Built
1974
51 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
230 ft
2 main spans
Daily traffic
400
2022 count
Owner
State
State Highway Agency

About this bridge

Curran RD (tr 156) over I- 72 / US 36 is a steel continuous stringer/multi-beam or girder carrying Curran RD (tr 156) over I- 72 / US 36 in Sangamon County, Illinois. It was built in 1974, so it is 51 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 400 vehicles a day, roughly 5% of them trucks, projected to reach 455 by 2046. The structure is 230 ft (70.2 m) long and 30 ft wide.

Location

Open in Google Maps
CarriesCurran RD (tr 156)
CrossesI- 72 / US 36
Location1.1M W Wabash Intchg
CountySangamon County
StateIllinois
Coordinates39.75198, -89.77185
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.8 US tons
Inventory rating28.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 15
Structure length230 ft (70.2 m)
Longest span99 ft (30.2 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2022)
Projected traffic455 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 Curran RD (tr 156) over I- 72 / US 36 built?

It was built in 1974, making it 51 years old in 2025.

What condition is Curran RD (tr 156) over I- 72 / US 36 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 September 2023.

How much traffic does Curran RD (tr 156) over I- 72 / US 36 carry?

About 400 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Curran RD (tr 156) over I- 72 / US 36?

The structure is 230 ft (70.2 m) long with a longest span of 99 ft (30.2 m) and a deck 30 ft wide.

Who owns Curran RD (tr 156) over I- 72 / US 36?

It is owned by the State Highway Agency.