US Bridges

CR 100 E over Lake Sullivan

Fair

Sullivan County, Indiana · 00.18 S of CR 350 N · Structure no. 7700163

Built
1965
60 years old
Condition
Fair
inspected August 2023
Type
Channel Beam
Concrete
Length
40 ft
1 main span
Daily traffic
110
2011 count
Owner
County
County Highway Agency

About this bridge

CR 100 E over Lake Sullivan is a concrete channel beam carrying CR 100 E over Lake Sullivan in Sullivan County, Indiana. It was built in 1965, so it is 60 years old, older 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 110 vehicles a day, roughly 2% of them trucks, projected to reach 130 by 2031. The structure is 40 ft (12.1 m) long and 26 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesCR 100 E
CrossesLake Sullivan
Location00.18 S of CR 350 N
RouteCounty Highway 51
CountySullivan County
StateIndiana
Coordinates39.13338, -87.3905
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 protection7 GoodSome minor problems.
Last inspectionAugust 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.9 US tons
Inventory rating26.9 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length40 ft (12.1 m)
Longest span39 ft (11.8 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2011)
Projected traffic130 by 2031
Trucks2%
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 100 E over Lake Sullivan built?

It was built in 1965, making it 60 years old in 2025.

What condition is CR 100 E over Lake Sullivan 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 August 2023.

How much traffic does CR 100 E over Lake Sullivan carry?

About 110 vehicles per day (2011 count), of which roughly 2% are trucks.

How long is CR 100 E over Lake Sullivan?

The structure is 40 ft (12.1 m) long with a longest span of 39 ft (11.8 m) and a deck 26 ft wide.

Who owns CR 100 E over Lake Sullivan?

It is owned by the County Highway Agency.