US Bridges

Park Access RD over Flat CR

Poor

Boone County, Missouri · S 22 T 48 N R 13 W · Structure no. 28133

Built
1950
75 years old
Condition
Poor
inspected December 2024
Type
Arch - Deck
Steel
Length
69 ft
1 main span
Daily traffic
75
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Park Access RD over Flat CR is a steel arch - deck carrying Park Access RD over Flat CR in Boone 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 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.

It carries about 75 vehicles a day, roughly 10% of them trucks, projected to reach 131 by 2043. The structure is 69 ft (21 m) long and 26 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesPark Access RD
CrossesFlat CR
LocationS 22 T 48 N R 13 W
RouteCity Street 0
CountyBoone County
StateMissouri
Coordinates38.93871, -92.35066
Functional classUrban 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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans1 (+2 approach)
Design loadOther
Structure length69 ft (21 m)
Longest span24 ft (7.3 m)
Deck width26 ft (7.9 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2023)
Projected traffic131 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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$358,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Park Access RD over Flat CR built?

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

What condition is Park Access RD over Flat CR 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 December 2024.

How much traffic does Park Access RD over Flat CR carry?

About 75 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Park Access RD over Flat CR?

The structure is 69 ft (21 m) long with a longest span of 24 ft (7.3 m) and a deck 26 ft wide.

Who owns Park Access RD over Flat CR?

It is owned by the City or Municipal Highway Agency.