US Bridges

TR 231 over Marys River

Good

Randolph County, Illinois · TR231 .75MW Steevlle · Structure no. 079422700000000

Built
1981
44 years old
Condition
Good
inspected January 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
96 ft
3 main spans
Daily traffic
200
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 231 over Marys River is a prestressed concrete box beam or girders - multiple carrying TR 231 over Marys River in Randolph County, Illinois. It was built in 1981, so it is 44 years old, younger 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 200 vehicles a day, roughly 8% of them trucks, projected to reach 227 by 2046. The structure is 96 ft (29.3 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesTR 231
CrossesMarys River
LocationTR231 .75MW Steevlle
RouteCounty Highway 0
Coordinates38.00066, -89.67993
Functional classRural Local

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length96 ft (29.3 m)
Longest span32 ft (9.8 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2024)
Projected traffic227 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was TR 231 over Marys River built?

It was built in 1981, making it 44 years old in 2025.

What condition is TR 231 over Marys River 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 January 2025.

How much traffic does TR 231 over Marys River carry?

About 200 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is TR 231 over Marys River?

The structure is 96 ft (29.3 m) long with a longest span of 32 ft (9.8 m) and a deck 24 ft wide.

Who owns TR 231 over Marys River?

It is owned by the Town or Township Highway Agency.