US Bridges

US 31 NB over US 30 Eb/Wb

Good

Marshall County, Indiana · 07.83 N SR 10 · Structure no. 010080

Built
1960
65 years old, rebuilt 1998
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
229 ft
4 main spans
Daily traffic
8,928
2022 count
Owner
State
State Highway Agency

About this bridge

US 31 NB over US 30 Eb/Wb is a steel continuous stringer/multi-beam or girder carrying US 31 NB over US 30 Eb/Wb in Marshall County, Indiana. It was built in 1960 and reconstructed in 1998, so it is 65 years old, older 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 8,928 vehicles a day, roughly 21% of them trucks, projected to reach 10,102 by 2029. The structure is 229 ft (69.7 m) long and 46 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS 31 NB
CrossesUS 30 Eb/Wb
Location07.83 N SR 10
RouteU.S. Route 31
StateIndiana
Coordinates41.34974, -86.27346
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.
Substructure8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than 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 rating57.9 US tons
Inventory rating44.6 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length229 ft (69.7 m)
Longest span73 ft (22.2 m)
Deck width46 ft (14.1 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,928 (2022)
Projected traffic10,102 by 2029
Trucks21%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 NB over US 30 Eb/Wb built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1998.

What condition is US 31 NB over US 30 Eb/Wb 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 NB over US 30 Eb/Wb carry?

About 8,928 vehicles per day (2022 count), of which roughly 21% are trucks.

How long is US 31 NB over US 30 Eb/Wb?

The structure is 229 ft (69.7 m) long with a longest span of 73 ft (22.2 m) and a deck 46 ft wide.

Who owns US 31 NB over US 30 Eb/Wb?

It is owned by the State Highway Agency.