US Bridges

E 56th DD.0-28.1T over Deep Creek

PoorPosted for load

Riley County, Kansas · 1.4S 8.4E of Manhattan · Structure no. 000810919004161

Built
1920
105 years old
Condition
Poor
inspected December 2024
Type
Truss - Thru
Steel
Length
81 ft
1 main span
Daily traffic
10
2004 count
Owner
County
County Highway Agency

About this bridge

E 56th DD.0-28.1T over Deep Creek is a steel truss - thru carrying E 56th DD.0-28.1T over Deep Creek in Riley County, Kansas. It was built in 1920, so it is 105 years old, older than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 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 10 vehicles a day, projected to reach 10 by 2044. The structure is 81 ft (24.7 m) long and 16 ft wide. If it were closed, the detour would be 198.8 mi (320 km).

Location

Open in Google Maps
CarriesE 56th DD.0-28.1T
CrossesDeep Creek
Location1.4S 8.4E of Manhattan
RouteCounty Highway 0
CountyRiley County
StateKansas
Coordinates39.15882, -96.40738
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.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating14.9 US tons
Inventory rating9.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length81 ft (24.7 m)
Longest span80 ft (24.4 m)
Deck width16 ft (4.8 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic10 (2004)
Projected traffic10 by 2044
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed198.8 mi (320 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$675,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was E 56th DD.0-28.1T over Deep Creek built?

It was built in 1920, making it 105 years old in 2025.

What condition is E 56th DD.0-28.1T over Deep Creek 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 December 2024.

How much traffic does E 56th DD.0-28.1T over Deep Creek carry?

About 10 vehicles per day (2004 count).

How long is E 56th DD.0-28.1T over Deep Creek?

The structure is 81 ft (24.7 m) long with a longest span of 80 ft (24.4 m) and a deck 16 ft wide.

Who owns E 56th DD.0-28.1T over Deep Creek?

It is owned by the County Highway Agency.