US Bridges

County RD E-435 over Town Br

PoorPosted for load

Polk County, Missouri · S 6 T 33 N R 22 W · Structure no. 24504

Built
1900
125 years old
Condition
Poor
inspected November 2024
Type
Arch - Deck
Concrete
Length
26 ft
2 main spans
Daily traffic
300
2024 count
Owner
County
County Highway Agency

About this bridge

County RD E-435 over Town Br is a concrete arch - deck carrying County RD E-435 over Town Br in Polk County, Missouri. It was built in 1900, so it is 125 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 300 vehicles a day, roughly 10% of them trucks, projected to reach 435 by 2044. The structure is 26 ft (7.9 m) long and 18 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesCounty RD E-435
CrossesTown Br
LocationS 6 T 33 N R 22 W
RouteCounty Highway 502
CountyPolk County
StateMissouri
Coordinates37.61873, -93.38678
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
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating14.9 US tons
Inventory rating8.9 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans2
Design loadOther
Structure length26 ft (7.9 m)
Longest span11 ft (3.4 m)
Deck width18 ft (5.6 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2024)
Projected traffic435 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$317,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD E-435 over Town Br built?

It was built in 1900, making it 125 years old in 2025.

What condition is County RD E-435 over Town Br 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 November 2024.

How much traffic does County RD E-435 over Town Br carry?

About 300 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD E-435 over Town Br?

The structure is 26 ft (7.9 m) long with a longest span of 11 ft (3.4 m) and a deck 18 ft wide.

Who owns County RD E-435 over Town Br?

It is owned by the County Highway Agency.