US Bridges

Is 29 S over Mapes Br

Fair

Atchison County, Missouri · S 13 T 66 N R 42 W · Structure no. 2046

Built
1969
56 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete Continuous
Length
63 ft
3 main spans
Daily traffic
15,391
2024 count
Owner
State
State Highway Agency

About this bridge

Is 29 S over Mapes Br is a concrete continuous culvert carrying Is 29 S over Mapes Br in Atchison County, Missouri. It was built in 1969, so it is 56 years old, older than the Missouri average of 45.1 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 15,391 vehicles a day, roughly 42% of them trucks, projected to reach 32,321 by 2044. The structure is 63 ft (19.2 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIs 29 S
CrossesMapes Br
LocationS 13 T 66 N R 42 W
RouteInterstate 29
CountyAtchison County
StateMissouri
Coordinates40.53309, -95.61532
Functional classRural Principal Arterial - Interstate

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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating67.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 20
Structure length63 ft (19.2 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,391 (2024)
Projected traffic32,321 by 2044
Trucks42%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Is 29 S over Mapes Br built?

It was built in 1969, making it 56 years old in 2025.

What condition is Is 29 S over Mapes Br 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 January 2024.

How much traffic does Is 29 S over Mapes Br carry?

About 15,391 vehicles per day (2024 count), of which roughly 42% are trucks.

How long is Is 29 S over Mapes Br?

The structure is 63 ft (19.2 m) long with a longest span of 10 ft (3 m).

Who owns Is 29 S over Mapes Br?

It is owned by the State Highway Agency.