US Bridges

CR 600E over Mounts Run

PoorPosted for load

Boone County, Indiana · 00.30 N of CR 200 N · Structure no. 0600052

Built
1930
95 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
25 ft
1 main span
Daily traffic
260
2017 count
Owner
County
County Highway Agency

About this bridge

CR 600E over Mounts Run is a concrete stringer/multi-beam or girder carrying CR 600E over Mounts Run in Boone County, Indiana. It was built in 1930, so it is 95 years old, older than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 260 vehicles a day, roughly 3% of them trucks, projected to reach 400 by 2037. The structure is 25 ft (7.6 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCR 600E
CrossesMounts Run
Location00.30 N of CR 200 N
RouteCounty Highway 600
StateIndiana
Coordinates40.07379, -86.35609
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.2 US tons
Inventory rating33.2 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span23 ft (7.1 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic260 (2017)
Projected traffic400 by 2037
Trucks3%
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 statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.7 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 600E over Mounts Run built?

It was built in 1930, making it 95 years old in 2025.

What condition is CR 600E over Mounts Run in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does CR 600E over Mounts Run carry?

About 260 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is CR 600E over Mounts Run?

The structure is 25 ft (7.6 m) long with a longest span of 23 ft (7.1 m) and a deck 22 ft wide.

Who owns CR 600E over Mounts Run?

It is owned by the County Highway Agency.