US Bridges

B-12.5 61 over South Fork Mill Creek

Good

Washington County, Kansas · 1.4S 2.5W of Haddam · Structure no. 001010819003224

Built
2014
11 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
72 ft
1 main span
Daily traffic
25
2014 count
Owner
County
County Highway Agency

About this bridge

B-12.5 61 over South Fork Mill Creek is a steel stringer/multi-beam or girder carrying B-12.5 61 over South Fork Mill Creek in Washington County, Kansas. It was built in 2014, so it is 11 years old, younger than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 25 vehicles a day, projected to reach 30 by 2043. The structure is 72 ft (21.9 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesB-12.5 61
CrossesSouth Fork Mill Creek
Location1.4S 2.5W of Haddam
RouteCounty Highway 352
StateKansas
Coordinates39.83576, -97.35066
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.2 US tons
Inventory rating53.2 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span70 ft (21.3 m)
Deck width27 ft (8.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic25 (2014)
Projected traffic30 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 B-12.5 61 over South Fork Mill Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is B-12.5 61 over South Fork Mill 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 March 2023.

How much traffic does B-12.5 61 over South Fork Mill Creek carry?

About 25 vehicles per day (2014 count).

How long is B-12.5 61 over South Fork Mill Creek?

The structure is 72 ft (21.9 m) long with a longest span of 70 ft (21.3 m) and a deck 27 ft wide.

Who owns B-12.5 61 over South Fork Mill Creek?

It is owned by the County Highway Agency.