US Bridges

CR 1550N over Big Duck Creek

Good

Madison County, Indiana · 00.50 W SR 37 · Structure no. 4800004

Built
1986
39 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete Continuous
Length
62 ft
3 main spans
Daily traffic
147
2023 count
Owner
County
County Highway Agency

About this bridge

CR 1550N over Big Duck Creek is a concrete continuous slab carrying CR 1550N over Big Duck Creek in Madison 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 147 vehicles a day, roughly 3% of them trucks, projected to reach 209 by 2043. The structure is 62 ft (18.8 m) long and 24 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesCR 1550N
CrossesBig Duck Creek
Location00.50 W SR 37
RouteCounty Highway 90
StateIndiana
Coordinates40.32809, -85.79627
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.7 US tons
Inventory rating41 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length62 ft (18.8 m)
Longest span24 ft (7.3 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic147 (2023)
Projected traffic209 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 1550N over Big Duck Creek built?

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

What condition is CR 1550N over Big Duck Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does CR 1550N over Big Duck Creek carry?

About 147 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is CR 1550N over Big Duck Creek?

The structure is 62 ft (18.8 m) long with a longest span of 24 ft (7.3 m) and a deck 24 ft wide.

Who owns CR 1550N over Big Duck Creek?

It is owned by the County Highway Agency.