US Bridges

6th ST over Over UPRR

Fair

Story County, Iowa · A19000665 · Structure no. 000000000000190

Built
1966
59 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete Continuous
Length
120 ft
5 main spans
Daily traffic
3,863
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

6th ST over Over UPRR is a concrete continuous slab carrying 6th ST over Over UPRR in Story County, Iowa. It was built in 1966, so it is 59 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 3,863 vehicles a day, projected to reach 3,863 by 2043. The structure is 120 ft (36.6 m) long and 60 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries6th ST
CrossesOver UPRR
LocationA19000665
RouteCity Street 0
CountyStory County
StateIowa
Coordinates42.02675, -93.62469
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating77.3 US tons
Inventory rating46.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span30 ft (9.1 m)
Deck width60 ft (18.3 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,863 (2022)
Projected traffic3,863 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was 6th ST over Over UPRR built?

It was built in 1966, making it 59 years old in 2025.

What condition is 6th ST over Over UPRR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

How much traffic does 6th ST over Over UPRR carry?

About 3,863 vehicles per day (2022 count).

How long is 6th ST over Over UPRR?

The structure is 120 ft (36.6 m) long with a longest span of 30 ft (9.1 m) and a deck 60 ft wide.

Who owns 6th ST over Over UPRR?

It is owned by the City or Municipal Highway Agency.