US Bridges

CR 600S over Back Creek

Good

Grant County, Indiana · 00.07 MI W of Fairmount a · Structure no. 2700101

Built
1968
57 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete Continuous
Length
81 ft
3 main spans
Daily traffic
630
2021 count
Owner
County
County Highway Agency

About this bridge

CR 600S over Back Creek is a concrete continuous slab carrying CR 600S over Back Creek in Grant County, Indiana. It was built in 1968, so it is 57 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 630 vehicles a day, roughly 5% of them trucks, projected to reach 960 by 2041. The structure is 81 ft (24.8 m) long and 28 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesCR 600S
CrossesBack Creek
Location00.07 MI W of Fairmount a
RouteCounty Highway 28
StateIndiana
Coordinates40.46718, -85.63607
Functional classRural 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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 alignment6: Equal to present minimum criteria
Operating rating45.2 US tons
Inventory rating34.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length81 ft (24.8 m)
Longest span31 ft (9.6 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic630 (2021)
Projected traffic960 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 600S over Back Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is CR 600S over Back 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 October 2023.

How much traffic does CR 600S over Back Creek carry?

About 630 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is CR 600S over Back Creek?

The structure is 81 ft (24.8 m) long with a longest span of 31 ft (9.6 m) and a deck 28 ft wide.

Who owns CR 600S over Back Creek?

It is owned by the County Highway Agency.