US Bridges

3900 RD Mile 16 over Rock Creek

Fair

Montgomery County, Kansas · S. Side of Independence · Structure no. 000000000630370

Built
1972
53 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Concrete Continuous
Length
133 ft
3 main spans
Daily traffic
4,608
2010 count
Owner
County
County Highway Agency

About this bridge

3900 RD Mile 16 over Rock Creek is a concrete continuous tee beam carrying 3900 RD Mile 16 over Rock Creek in Montgomery County, Kansas. It was built in 1972, so it is 53 years old, older 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 4,608 vehicles a day, roughly 8% of them trucks, projected to reach 5,616 by 2039. The structure is 133 ft (40.4 m) long and 70 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries3900 RD Mile 16
CrossesRock Creek
LocationS. Side of Independence
RouteCounty Highway 475
CountyMontgomery County
StateKansas
Coordinates37.21423, -95.71083
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.3 US tons
Inventory rating41.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length133 ft (40.4 m)
Longest span50 ft (15.2 m)
Deck width70 ft (21.3 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic4,608 (2010)
Projected traffic5,616 by 2039
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 3900 RD Mile 16 over Rock Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is 3900 RD Mile 16 over Rock 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 October 2023.

How much traffic does 3900 RD Mile 16 over Rock Creek carry?

About 4,608 vehicles per day (2010 count), of which roughly 8% are trucks.

How long is 3900 RD Mile 16 over Rock Creek?

The structure is 133 ft (40.4 m) long with a longest span of 50 ft (15.2 m) and a deck 70 ft wide.

Who owns 3900 RD Mile 16 over Rock Creek?

It is owned by the County Highway Agency.