US Bridges

SE 45th RD over N Fk Spring Rvr

PoorPosted for load

Barton County, Missouri · S 14 T 31 N R 29 W · Structure no. 23578

Built
1930
95 years old
Condition
Poor
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
56 ft
2 main spans
Daily traffic
10
2023 count
Owner
County
County Highway Agency

About this bridge

SE 45th RD over N Fk Spring Rvr is a steel stringer/multi-beam or girder carrying SE 45th RD over N Fk Spring Rvr in Barton County, Missouri. It was built in 1930, so it is 95 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 10 vehicles a day, roughly 10% of them trucks, projected to reach 14 by 2043. The structure is 56 ft (17.1 m) long and 16 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesSE 45th RD
CrossesN Fk Spring Rvr
LocationS 14 T 31 N R 29 W
RouteCounty Highway 417
Coordinates37.42948, -94.0937
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating29.8 US tons
Inventory rating15.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length56 ft (17.1 m)
Longest span27 ft (8.2 m)
Deck width16 ft (4.8 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2023)
Projected traffic14 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$438,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SE 45th RD over N Fk Spring Rvr built?

It was built in 1930, making it 95 years old in 2025.

What condition is SE 45th RD over N Fk Spring Rvr in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2023.

How much traffic does SE 45th RD over N Fk Spring Rvr carry?

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

How long is SE 45th RD over N Fk Spring Rvr?

The structure is 56 ft (17.1 m) long with a longest span of 27 ft (8.2 m) and a deck 16 ft wide.

Who owns SE 45th RD over N Fk Spring Rvr?

It is owned by the County Highway Agency.