US Bridges

CR 100S over Walnut Fork of Sugar CR

Good

Boone County, Indiana · 00.80 W of CR 950 W · Structure no. 0600095

Built
1977
48 years old
Condition
Good
inspected September 2023
Type
Slab
Concrete Continuous
Length
79 ft
3 main spans
Daily traffic
200
2017 count
Owner
County
County Highway Agency

About this bridge

CR 100S over Walnut Fork of Sugar CR is a concrete continuous slab carrying CR 100S over Walnut Fork of Sugar CR in Boone County, Indiana. It was built in 1977, so it is 48 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 200 vehicles a day, roughly 5% of them trucks, projected to reach 300 by 2037. The structure is 79 ft (24.1 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCR 100S
CrossesWalnut Fork of Sugar CR
Location00.80 W of CR 950 W
RouteCounty Highway 100
CountyBoone County
StateIndiana
Coordinates40.02486, -86.66324
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 protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.5 US tons
Inventory rating26.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length79 ft (24.1 m)
Longest span29 ft (8.9 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2017)
Projected traffic300 by 2037
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 CR 100S over Walnut Fork of Sugar CR built?

It was built in 1977, making it 48 years old in 2025.

What condition is CR 100S over Walnut Fork of Sugar CR 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 CR 100S over Walnut Fork of Sugar CR carry?

About 200 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is CR 100S over Walnut Fork of Sugar CR?

The structure is 79 ft (24.1 m) long with a longest span of 29 ft (8.9 m) and a deck 31 ft wide.

Who owns CR 100S over Walnut Fork of Sugar CR?

It is owned by the County Highway Agency.