US Bridges

Local Rd. 70A over Trib to Irish Creek

Fair

Linn County, Kansas · 1.9S 1.0W of Blue Mound · Structure no. 000541071005669

Built
1990
35 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
20
2006 count
Owner
County
County Highway Agency

About this bridge

Local Rd. 70A over Trib to Irish Creek is a concrete culvert carrying Local Rd. 70A over Trib to Irish Creek in Linn County, Kansas. It was built in 1990, so it is 35 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 20 vehicles a day, projected to reach 25 by 2044. The structure is 29 ft (8.8 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLocal Rd. 70A
CrossesTrib to Irish Creek
Location1.9S 1.0W of Blue Mound
RouteCounty Highway 0
CountyLinn County
StateKansas
Coordinates38.05318, -95.02488
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.7 US tons
Inventory rating23 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span14 ft (4.2 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic20 (2006)
Projected traffic25 by 2044
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 Local Rd. 70A over Trib to Irish Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is Local Rd. 70A over Trib to Irish 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 February 2024.

How much traffic does Local Rd. 70A over Trib to Irish Creek carry?

About 20 vehicles per day (2006 count).

How long is Local Rd. 70A over Trib to Irish Creek?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.2 m) and a deck 26 ft wide.

Who owns Local Rd. 70A over Trib to Irish Creek?

It is owned by the County Highway Agency.