US Bridges

US 150 over Mysterious Spring

Fair

Orange County, Indiana · 03.70 E SR 56 · Structure no. 027510

Built
1927
98 years old, rebuilt 1968
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
48 ft
1 main span
Daily traffic
5,365
2004 count
Owner
State
State Highway Agency

About this bridge

US 150 over Mysterious Spring is a concrete culvert carrying US 150 over Mysterious Spring in Orange County, Indiana. It was built in 1927 and reconstructed in 1968, so it is 98 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 5,365 vehicles a day, roughly 10% of them trucks, projected to reach 7,431 by 2030. The structure is 48 ft (14.6 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUS 150
CrossesMysterious Spring
Location03.70 E SR 56
RouteU.S. Route 150
CountyOrange County
StateIndiana
Coordinates38.57327, -86.55092
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.9 US tons
Inventory rating26.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length48 ft (14.6 m)
Longest span36 ft (10.9 m)
Deck width35 ft (10.6 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,365 (2004)
Projected traffic7,431 by 2030
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 150 over Mysterious Spring built?

It was built in 1927, making it 98 years old in 2025. It was reconstructed in 1968.

What condition is US 150 over Mysterious Spring 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 December 2024.

How much traffic does US 150 over Mysterious Spring carry?

About 5,365 vehicles per day (2004 count), of which roughly 10% are trucks.

How long is US 150 over Mysterious Spring?

The structure is 48 ft (14.6 m) long with a longest span of 36 ft (10.9 m) and a deck 35 ft wide.

Who owns US 150 over Mysterious Spring?

It is owned by the State Highway Agency.