US Bridges

Tunnelton Dennison over Back Creek

Fair

Lawrence County, Indiana · 01.38 N of Devils Backbon · Structure no. 4700151

Built
2007
18 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
77 ft
1 main span
Daily traffic
126
2016 count
Owner
County
County Highway Agency

About this bridge

Tunnelton Dennison over Back Creek is a steel stringer/multi-beam or girder carrying Tunnelton Dennison over Back Creek in Lawrence County, Indiana. It was built in 2007, so it is 18 years old, younger 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 126 vehicles a day, roughly 5% of them trucks, projected to reach 191 by 2036. The structure is 77 ft (23.4 m) long and 21 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTunnelton Dennison
CrossesBack Creek
Location01.38 N of Devils Backbon
RouteCounty Highway 0
CountyLawrence County
StateIndiana
Coordinates38.79538, -86.329
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating63.1 US tons
Inventory rating37.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length77 ft (23.4 m)
Longest span70 ft (21.3 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic126 (2016)
Projected traffic191 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Tunnelton Dennison over Back Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is Tunnelton Dennison over Back Creek 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 June 2024.

How much traffic does Tunnelton Dennison over Back Creek carry?

About 126 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Tunnelton Dennison over Back Creek?

The structure is 77 ft (23.4 m) long with a longest span of 70 ft (21.3 m) and a deck 21 ft wide.

Who owns Tunnelton Dennison over Back Creek?

It is owned by the County Highway Agency.