US Bridges

Swanson RD150 W over I-90 Eb/Wb

Good

Porter County, Indiana · 01.59 E SR 149 · Structure no. 046960

Built
1956
69 years old, rebuilt 1997
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
218 ft
4 main spans
Daily traffic
571
2004 count
Owner
Toll Authority
State Toll Authority

About this bridge

Swanson RD150 W over I-90 Eb/Wb is a steel stringer/multi-beam or girder carrying Swanson RD150 W over I-90 Eb/Wb in Porter County, Indiana. It was built in 1956 and reconstructed in 1997, so it is 69 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 571 vehicles a day, roughly 10% of them trucks, projected to reach 1,100 by 2031. The structure is 218 ft (66.4 m) long and 30 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesSwanson RD150 W
CrossesI-90 Eb/Wb
Location01.59 E SR 149
RouteCounty Highway 50
StateIndiana
Coordinates41.57911, -87.09559
Functional classUrban 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.
Substructure7 GoodSome minor problems.
Last inspectionJuly 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 rating63.2 US tons
Inventory rating48.6 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length218 ft (66.4 m)
Longest span65 ft (19.7 m)
Deck width30 ft (9 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic571 (2004)
Projected traffic1,100 by 2031
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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 Swanson RD150 W over I-90 Eb/Wb built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1997.

What condition is Swanson RD150 W over I-90 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 July 2023.

How much traffic does Swanson RD150 W over I-90 Eb/Wb carry?

About 571 vehicles per day (2004 count), of which roughly 10% are trucks.

How long is Swanson RD150 W over I-90 Eb/Wb?

The structure is 218 ft (66.4 m) long with a longest span of 65 ft (19.7 m) and a deck 30 ft wide.

Who owns Swanson RD150 W over I-90 Eb/Wb?

It is owned by the State Toll Authority.