US Bridges

Old US 36/MORTON a over Bn RR

Fair

Morgan County, Illinois · 1.7M W I-72/US 36 · Structure no. 069050100000000

Built
2002
23 years old
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
345 ft
3 main spans
Daily traffic
7,050
2023 count
Owner
State
State Highway Agency

About this bridge

Old US 36/MORTON a over Bn RR is a steel continuous stringer/multi-beam or girder carrying Old US 36/MORTON a over Bn RR in Morgan County, Illinois. It was built in 2002, so it is 23 years old, younger 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 7,050 vehicles a day, roughly 7% of them trucks, projected to reach 8,434 by 2046. The structure is 345 ft (105.3 m) long and 78 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesOld US 36/MORTON a
CrossesBn RR
Location1.7M W I-72/US 36
RouteInterstate 72
Coordinates39.72349, -90.20053
Functional classUrban Other Principal Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.2 US tons
Inventory rating50 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length345 ft (105.3 m)
Longest span142 ft (43.3 m)
Deck width78 ft (23.8 m)
Roadway width75 ft (22.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,050 (2023)
Projected traffic8,434 by 2046
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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/MORTON a over Bn RR built?

It was built in 2002, making it 23 years old in 2025.

What condition is Old US 36/MORTON a over Bn RR 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 February 2025.

How much traffic does Old US 36/MORTON a over Bn RR carry?

About 7,050 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Old US 36/MORTON a over Bn RR?

The structure is 345 ft (105.3 m) long with a longest span of 142 ft (43.3 m) and a deck 78 ft wide.

Who owns Old US 36/MORTON a over Bn RR?

It is owned by the State Highway Agency.