US Bridges

US 31 SB over CSX RR

Good

Marshall County, Indiana · 00.63 N US 6 · Structure no. 079834

Built
2014
11 years old, rebuilt 2021
Condition
Good
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
128 ft
1 main span
Daily traffic
7,729
2020 count
Owner
State
State Highway Agency

About this bridge

US 31 SB over CSX RR is a prestressed concrete tee beam carrying US 31 SB over CSX RR in Marshall County, Indiana. It was built in 2014 and reconstructed in 2021, so it is 11 years old, younger than the Indiana average of 46.6 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 7,729 vehicles a day, roughly 22% of them trucks, projected to reach 15,568 by 2015. The structure is 128 ft (38.9 m) long and 46 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS 31 SB
CrossesCSX RR
Location00.63 N US 6
RouteU.S. Route 31
StateIndiana
Coordinates41.4594, -86.29073
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
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 rating67.9 US tons
Inventory rating45 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length128 ft (38.9 m)
Longest span126 ft (38.3 m)
Deck width46 ft (14.1 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,729 (2020)
Projected traffic15,568 by 2015
Trucks22%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed0.6 mi (1 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 US 31 SB over CSX RR built?

It was built in 2014, making it 11 years old in 2025. It was reconstructed in 2021.

What condition is US 31 SB over CSX RR 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 US 31 SB over CSX RR carry?

About 7,729 vehicles per day (2020 count), of which roughly 22% are trucks.

How long is US 31 SB over CSX RR?

The structure is 128 ft (38.9 m) long with a longest span of 126 ft (38.3 m) and a deck 46 ft wide.

Who owns US 31 SB over CSX RR?

It is owned by the State Highway Agency.