US Bridges

CR 1800N over Back Creek

Fair

Madison County, Indiana · 01.00 E SR 9 · Structure no. 4800028

Built
2000
25 years old
Condition
Fair
inspected September 2024
Type
Slab
Wood or Timber
Length
26 ft
1 main span
Daily traffic
174
2023 count
Owner
County
County Highway Agency

About this bridge

CR 1800N over Back Creek is a wood or timber slab carrying CR 1800N over Back Creek in Madison County, Indiana. It was built in 2000, so it is 25 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 174 vehicles a day, roughly 1% of them trucks, projected to reach 247 by 2043. The structure is 26 ft (7.9 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCR 1800N
CrossesBack Creek
Location01.00 E SR 9
RouteCounty Highway 106
StateIndiana
Coordinates40.36486, -85.65436
Functional classRural Local

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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93.6 US tons
Inventory rating56.1 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width27 ft (8.3 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic174 (2023)
Projected traffic247 by 2043
Trucks1%
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

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 CR 1800N over Back Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is CR 1800N 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 September 2024.

How much traffic does CR 1800N over Back Creek carry?

About 174 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is CR 1800N over Back Creek?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 27 ft wide.

Who owns CR 1800N over Back Creek?

It is owned by the County Highway Agency.