US Bridges

SR 18 over Little Deer Creek

Fair

Carroll County, Indiana · 00.65 E SR 29 W JCT · Structure no. 007930

Built
1930
95 years old, rebuilt 1971
Condition
Fair
inspected July 2024
Type
Arch - Deck
Concrete
Length
77 ft
1 main span
Daily traffic
3,253
2020 count
Owner
State
State Highway Agency

About this bridge

SR 18 over Little Deer Creek is a concrete arch - deck carrying SR 18 over Little Deer Creek in Carroll County, Indiana. It was built in 1930 and reconstructed in 1971, 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 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 3,253 vehicles a day, roughly 19% of them trucks, projected to reach 6,376 by 2029. The structure is 77 ft (23.4 m) long and 47 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR 18
CrossesLittle Deer Creek
Location00.65 E SR 29 W JCT
RouteState Highway 18
CountyCarroll County
StateIndiana
Coordinates40.55642, -86.39191
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating42.5 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length77 ft (23.4 m)
Longest span75 ft (22.8 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,253 (2020)
Projected traffic6,376 by 2029
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SR 18 over Little Deer Creek built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1971.

What condition is SR 18 over Little Deer 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 July 2024.

How much traffic does SR 18 over Little Deer Creek carry?

About 3,253 vehicles per day (2020 count), of which roughly 19% are trucks.

How long is SR 18 over Little Deer Creek?

The structure is 77 ft (23.4 m) long with a longest span of 75 ft (22.8 m) and a deck 47 ft wide.

Who owns SR 18 over Little Deer Creek?

It is owned by the State Highway Agency.