US Bridges

3700 RD Mile 7 over Bluff Run

Fair

Montgomery County, Kansas · 2.0S 2.0E of Jefferson · Structure no. 000630995007009

Built
1986
39 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
30
2010 count
Owner
County
County Highway Agency

About this bridge

3700 RD Mile 7 over Bluff Run is a steel stringer/multi-beam or girder carrying 3700 RD Mile 7 over Bluff Run in Montgomery County, Kansas. It was built in 1986, so it is 39 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 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 30 vehicles a day, projected to reach 36 by 2039. The structure is 31 ft (9.6 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries3700 RD Mile 7
CrossesBluff Run
Location2.0S 2.0E of Jefferson
RouteCounty Highway 0
CountyMontgomery County
StateKansas
Coordinates37.08289, -95.72921
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating74.6 US tons
Inventory rating44.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length31 ft (9.6 m)
Longest span29 ft (8.9 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic30 (2010)
Projected traffic36 by 2039
Trucks0%
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

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 3700 RD Mile 7 over Bluff Run built?

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

What condition is 3700 RD Mile 7 over Bluff Run 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 March 2023.

How much traffic does 3700 RD Mile 7 over Bluff Run carry?

About 30 vehicles per day (2010 count).

How long is 3700 RD Mile 7 over Bluff Run?

The structure is 31 ft (9.6 m) long with a longest span of 29 ft (8.9 m) and a deck 24 ft wide.

Who owns 3700 RD Mile 7 over Bluff Run?

It is owned by the County Highway Agency.