US Bridges

Harper RD over UP RR

FairPosted for load

Ray County, Missouri · S 9 T 54 N R 29 W · Structure no. 16734

Built
1950
75 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
140 ft
1 main span
Daily traffic
110
2023 count
Owner
Railroad
Railroad

About this bridge

Harper RD over UP RR is a steel stringer/multi-beam or girder carrying Harper RD over UP RR in Ray County, Missouri. It was built in 1950, so it is 75 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. Its operating status is: posted for load restriction.

It carries about 110 vehicles a day, roughly 10% of them trucks, projected to reach 149 by 2043. The structure is 140 ft (42.7 m) long and 23 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesHarper RD
CrossesUP RR
LocationS 9 T 54 N R 29 W
RouteCounty Highway 130
CountyRay County
StateMissouri
Coordinates39.50744, -94.15494
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating35.7 US tons
Inventory rating18.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1 (+5 approach)
Design loadOther
Structure length140 ft (42.7 m)
Longest span47 ft (14.3 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2023)
Projected traffic149 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerRailroad
Maintained byRailroad
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$949,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Harper RD over UP RR built?

It was built in 1950, making it 75 years old in 2025.

What condition is Harper 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 May 2023.

How much traffic does Harper RD over UP RR carry?

About 110 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Harper RD over UP RR?

The structure is 140 ft (42.7 m) long with a longest span of 47 ft (14.3 m) and a deck 23 ft wide.

Who owns Harper RD over UP RR?

It is owned by the Railroad.