US Bridges

Buffalo-Mchbg/ Ch over I-72 / US 36

Fair

Sangamon County, Illinois · 1M S Buffalo · Structure no. 084015600000000

Built
1974
51 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
246 ft
2 main spans
Daily traffic
1,300
2022 count
Owner
State
State Highway Agency

About this bridge

Buffalo-Mchbg/ Ch over I-72 / US 36 is a steel continuous stringer/multi-beam or girder carrying Buffalo-Mchbg/ Ch 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,300 vehicles a day, roughly 12% of them trucks, projected to reach 1,263 by 2046. The structure is 246 ft (75 m) long and 68 ft wide.

Location

Open in Google Maps
CarriesBuffalo-Mchbg/ Ch
CrossesI-72 / US 36
Location1M S Buffalo
RouteCounty Highway 0
CountySangamon County
StateIllinois
Coordinates39.83903, -89.40621
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93.6 US tons
Inventory rating43.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length246 ft (75 m)
Longest span99 ft (30.3 m)
Deck width68 ft (20.7 m)
Roadway width48 ft (14.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2022)
Projected traffic1,263 by 2046
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
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 Buffalo-Mchbg/ Ch over I-72 / US 36 built?

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

What condition is Buffalo-Mchbg/ Ch over I-72 / US 36 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2024.

How much traffic does Buffalo-Mchbg/ Ch over I-72 / US 36 carry?

About 1,300 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is Buffalo-Mchbg/ Ch over I-72 / US 36?

The structure is 246 ft (75 m) long with a longest span of 99 ft (30.3 m) and a deck 68 ft wide.

Who owns Buffalo-Mchbg/ Ch over I-72 / US 36?

It is owned by the State Highway Agency.