US Bridges

US 275 S over Mcelroy Br

Fair

Atchison County, Missouri · S 16 T 66 N R 41 W · Structure no. 2437

Built
1973
52 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
199 ft
5 main spans
Daily traffic
226
2024 count
Owner
State
State Highway Agency

About this bridge

US 275 S over Mcelroy Br is a steel continuous stringer/multi-beam or girder carrying US 275 S over Mcelroy Br in Atchison County, Missouri. It was built in 1973, so it is 52 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 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 226 vehicles a day, roughly 30% of them trucks, projected to reach 294 by 2044. The structure is 199 ft (60.7 m) long and 31 ft wide. If it were closed, the detour would be 49.1 mi (79 km).

Location

Open in Google Maps
CarriesUS 275 S
CrossesMcelroy Br
LocationS 16 T 66 N R 41 W
RouteU.S. Route 275
CountyAtchison County
StateMissouri
Coordinates40.53896, -95.56247
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.6 US tons
Inventory rating29.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length199 ft (60.7 m)
Longest span43 ft (13.1 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic226 (2024)
Projected traffic294 by 2044
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.1 mi (79 km)
TollOn a free road
National Highway SystemNo

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 US 275 S over Mcelroy Br built?

It was built in 1973, making it 52 years old in 2025.

What condition is US 275 S over Mcelroy 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 September 2023.

How much traffic does US 275 S over Mcelroy Br carry?

About 226 vehicles per day (2024 count), of which roughly 30% are trucks.

How long is US 275 S over Mcelroy Br?

The structure is 199 ft (60.7 m) long with a longest span of 43 ft (13.1 m) and a deck 31 ft wide.

Who owns US 275 S over Mcelroy Br?

It is owned by the State Highway Agency.