US Bridges

Arlington ST over Rock CR

Poor

Jackson County, Missouri · S 8 T 49 N R 32 W · Structure no. 28815

Built
1979
46 years old
Condition
Poor
inspected January 2023
Type
Tee Beam
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
30,000
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Arlington ST over Rock CR is a prestressed concrete tee beam carrying Arlington ST over Rock CR in Jackson County, Missouri. It was built in 1979, so it is 46 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 30,000 vehicles a day, roughly 20% of them trucks, projected to reach 39,000 by 2044. The structure is 31 ft (9.4 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesArlington ST
CrossesRock CR
LocationS 8 T 49 N R 32 W
RouteCity Street 0
CountyJackson County
StateMissouri
Coordinates39.0842, -94.46471
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJanuary 2023
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87.3 US tons
Inventory rating34.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadOther
Structure length31 ft (9.4 m)
Longest span28 ft (8.5 m)
Deck width35 ft (10.7 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,000 (2024)
Projected traffic39,000 by 2044
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$499,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Arlington ST over Rock CR built?

It was built in 1979, making it 46 years old in 2025.

What condition is Arlington ST over Rock 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 January 2023.

How much traffic does Arlington ST over Rock CR carry?

About 30,000 vehicles per day (2024 count), of which roughly 20% are trucks.

How long is Arlington ST over Rock CR?

The structure is 31 ft (9.4 m) long with a longest span of 28 ft (8.5 m) and a deck 35 ft wide.

Who owns Arlington ST over Rock CR?

It is owned by the City or Municipal Highway Agency.