US Bridges

I-69 NB over NS RR

Fair

DeKalb County, Indiana · 00.55 S US 6 · Structure no. 040700

Built
1963
62 years old, rebuilt 1994
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
148 ft
3 main spans
Daily traffic
13,630
2021 count
Owner
State
State Highway Agency

About this bridge

I-69 NB over NS RR is a steel continuous stringer/multi-beam or girder carrying I-69 NB over NS RR in DeKalb County, Indiana. It was built in 1963 and reconstructed in 1994, so it is 62 years old, older than the Indiana average of 46.6 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 13,630 vehicles a day, roughly 26% of them trucks, projected to reach 24,674 by 2034. The structure is 148 ft (45.1 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-69 NB
CrossesNS RR
Location00.55 S US 6
RouteInterstate 69
CountyDeKalb County
StateIndiana
Coordinates41.43254, -85.05331
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.5 US tons
Inventory rating32.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length148 ft (45.1 m)
Longest span55 ft (16.7 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,630 (2021)
Projected traffic24,674 by 2034
Trucks26%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-69 NB over NS RR built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1994.

What condition is I-69 NB over NS 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 July 2024.

How much traffic does I-69 NB over NS RR carry?

About 13,630 vehicles per day (2021 count), of which roughly 26% are trucks.

How long is I-69 NB over NS RR?

The structure is 148 ft (45.1 m) long with a longest span of 55 ft (16.7 m) and a deck 43 ft wide.

Who owns I-69 NB over NS RR?

It is owned by the State Highway Agency.