US Bridges

CR 100S over Big Eagle Creek

Fair

Boone County, Indiana · 00.30 W of US 421 · Structure no. 0600138

Built
1986
39 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
108 ft
3 main spans
Daily traffic
110
2017 count
Owner
County
County Highway Agency

About this bridge

CR 100S over Big Eagle Creek is a prestressed concrete box beam or girders - multiple carrying CR 100S over Big Eagle Creek in Boone County, Indiana. It was built in 1986, so it is 39 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 5 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 110 vehicles a day, roughly 5% of them trucks, projected to reach 170 by 2037. The structure is 108 ft (33 m) long and 24 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesCR 100S
CrossesBig Eagle Creek
Location00.30 W of US 421
RouteCounty Highway 100
CountyBoone County
StateIndiana
Coordinates40.02708, -86.28392
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45.7 US tons
Inventory rating34 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadUnknown
Structure length108 ft (33 m)
Longest span36 ft (10.9 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2017)
Projected traffic170 by 2037
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$628,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 100S over Big Eagle Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is CR 100S over Big Eagle 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 2023.

How much traffic does CR 100S over Big Eagle Creek carry?

About 110 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is CR 100S over Big Eagle Creek?

The structure is 108 ft (33 m) long with a longest span of 36 ft (10.9 m) and a deck 24 ft wide.

Who owns CR 100S over Big Eagle Creek?

It is owned by the County Highway Agency.