US Bridges

8th ST over Delaware Ave

Poor

Jackson County, Missouri · S 5 T 49 N R 33 W · Structure no. 25402

Built
1952
73 years old, rebuilt 1974
Condition
Poor
inspected April 2024
Type
Slab
Concrete Continuous
Length
180 ft
2 main spans
Daily traffic
1,754
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

8th ST over Delaware Ave is a concrete continuous slab carrying 8th ST over Delaware Ave in Jackson County, Missouri. It was built in 1952 and reconstructed in 1974, so it is 73 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 1,754 vehicles a day, roughly 5% of them trucks, projected to reach 2,280 by 2044. The structure is 180 ft (54.9 m) long and 30 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
Carries8th ST
CrossesDelaware Ave
LocationS 5 T 49 N R 33 W
RouteCity Street 0
CountyJackson County
StateMissouri
Coordinates39.10454, -94.58305
Functional classUrban Collector

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.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length180 ft (54.9 m)
Longest span82 ft (25 m)
Deck width30 ft (9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,754 (2024)
Projected traffic2,280 by 2044
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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$1.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 8th ST over Delaware Ave built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1974.

What condition is 8th ST over Delaware Ave 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 April 2024.

How much traffic does 8th ST over Delaware Ave carry?

About 1,754 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is 8th ST over Delaware Ave?

The structure is 180 ft (54.9 m) long with a longest span of 82 ft (25 m) and a deck 30 ft wide.

Who owns 8th ST over Delaware Ave?

It is owned by the City or Municipal Highway Agency.