US Bridges

Dyer Rd. over Big Blue River

Fair

Pottawatomie County, Kansas · 2.0N of Manhattan · Structure no. 000000000750080

Built
1974
51 years old, rebuilt 1994
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
385 ft
3 main spans
Daily traffic
1,210
2013 count
Owner
County
County Highway Agency

About this bridge

Dyer Rd. over Big Blue River is a steel continuous stringer/multi-beam or girder carrying Dyer Rd. over Big Blue River in Pottawatomie County, Kansas. It was built in 1974 and reconstructed in 1994, so it is 51 years old, younger than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 1,210 vehicles a day, projected to reach 1,452 by 2043. The structure is 385 ft (117.3 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesDyer Rd.
CrossesBig Blue River
Location2.0N of Manhattan
RouteCounty Highway 536
CountyPottawatomie County
StateKansas
Coordinates39.23761, -96.5713
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to 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 alignment7: Better than present minimum criteria
Operating rating55 US tons
Inventory rating32.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadHS 15
Structure length385 ft (117.3 m)
Longest span130 ft (39.5 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic1,210 (2013)
Projected traffic1,452 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Dyer Rd. over Big Blue River built?

It was built in 1974, making it 51 years old in 2025. It was reconstructed in 1994.

What condition is Dyer Rd. over Big Blue River 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 2023.

How much traffic does Dyer Rd. over Big Blue River carry?

About 1,210 vehicles per day (2013 count).

How long is Dyer Rd. over Big Blue River?

The structure is 385 ft (117.3 m) long with a longest span of 130 ft (39.5 m) and a deck 30 ft wide.

Who owns Dyer Rd. over Big Blue River?

It is owned by the County Highway Agency.