US Bridges

Hillsboro RD over Colony Creek

Fair

Henry County, Indiana · 00.03 N of CR 300 N · Structure no. 3300154

Built
1959
66 years old
Condition
Fair
inspected August 2023
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
312
2021 count
Owner
County
County Highway Agency

About this bridge

Hillsboro RD over Colony Creek is a concrete slab carrying Hillsboro RD over Colony Creek in Henry County, Indiana. It was built in 1959, so it is 66 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 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 312 vehicles a day, roughly 8% of them trucks, projected to reach 469 by 2041. The structure is 23 ft (7.1 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesHillsboro RD
CrossesColony Creek
Location00.03 N of CR 300 N
RouteCounty Highway 0
CountyHenry County
StateIndiana
Coordinates39.97555, -85.32755
Functional classRural Minor Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating49.3 US tons
Inventory rating29.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length23 ft (7.1 m)
Longest span22 ft (6.7 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic312 (2021)
Projected traffic469 by 2041
Trucks8%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$425,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Hillsboro RD over Colony Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is Hillsboro RD over Colony 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 August 2023.

How much traffic does Hillsboro RD over Colony Creek carry?

About 312 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Hillsboro RD over Colony Creek?

The structure is 23 ft (7.1 m) long with a longest span of 22 ft (6.7 m) and a deck 26 ft wide.

Who owns Hillsboro RD over Colony Creek?

It is owned by the County Highway Agency.