US Bridges

Oaktown Road over Mariah Creek

Good

Knox County, Indiana · 00.21 N of Pepmeier Road · Structure no. 4200204

Built
1973
52 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
124 ft
3 main spans
Daily traffic
220
2015 count
Owner
County
County Highway Agency

About this bridge

Oaktown Road over Mariah Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Oaktown Road over Mariah Creek in Knox County, Indiana. It was built in 1973, so it is 52 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 220 vehicles a day, roughly 3% of them trucks, projected to reach 290 by 2035. The structure is 124 ft (37.7 m) long and 30 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesOaktown Road
CrossesMariah Creek
Location00.21 N of Pepmeier Road
RouteCounty Highway 0
StateIndiana
Coordinates38.83258, -87.37327
Functional classRural Minor Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40 US tons
Inventory rating23.3 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length124 ft (37.7 m)
Longest span41 ft (12.4 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic220 (2015)
Projected traffic290 by 2035
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Oaktown Road over Mariah Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is Oaktown Road over Mariah Creek 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 Oaktown Road over Mariah Creek carry?

About 220 vehicles per day (2015 count), of which roughly 3% are trucks.

How long is Oaktown Road over Mariah Creek?

The structure is 124 ft (37.7 m) long with a longest span of 41 ft (12.4 m) and a deck 30 ft wide.

Who owns Oaktown Road over Mariah Creek?

It is owned by the County Highway Agency.