US Bridges

WB Chipman RD over UP RR

Fair

Jackson County, Missouri · S 31 T 48 N R 31 W · Structure no. 20020

Built
1971
54 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
156 ft
3 main spans
Daily traffic
8,700
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

WB Chipman RD over UP RR is a steel continuous stringer/multi-beam or girder carrying WB Chipman RD over UP RR in Jackson County, Missouri. It was built in 1971, so it is 54 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 8,700 vehicles a day, roughly 20% of them trucks, projected to reach 11,310 by 2044. The structure is 156 ft (47.5 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesWB Chipman RD
CrossesUP RR
LocationS 31 T 48 N R 31 W
RouteCity Street 0
CountyJackson County
StateMissouri
Coordinates38.92536, -94.38771
Functional classUrban Minor 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.6 US tons
Inventory rating28.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length156 ft (47.5 m)
Longest span60 ft (18.3 m)
Deck width36 ft (10.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,700 (2024)
Projected traffic11,310 by 2044
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.1 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was WB Chipman RD over UP RR built?

It was built in 1971, making it 54 years old in 2025.

What condition is WB Chipman RD over UP RR 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 2023.

How much traffic does WB Chipman RD over UP RR carry?

About 8,700 vehicles per day (2024 count), of which roughly 20% are trucks.

How long is WB Chipman RD over UP RR?

The structure is 156 ft (47.5 m) long with a longest span of 60 ft (18.3 m) and a deck 36 ft wide.

Who owns WB Chipman RD over UP RR?

It is owned by the City or Municipal Highway Agency.