US Bridges

Grand Avenue over Mlk Pkwy

Fair

Polk County, Iowa · 078240800 · Structure no. 000000000504635

Built
2004
21 years old
Condition
Fair
inspected July 2023
Type
Frame
Concrete
Length
139 ft
1 main span
Daily traffic
9,983
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Grand Avenue over Mlk Pkwy is a concrete frame carrying Grand Avenue over Mlk Pkwy in Polk County, Iowa. It was built in 2004, so it is 21 years old, younger 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 6 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 9,983 vehicles a day, projected to reach 9,983 by 2043. The structure is 139 ft (42.4 m) long and 81 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesGrand Avenue
CrossesMlk Pkwy
Location078240800
RouteCity Street 0
CountyPolk County
StateIowa
Coordinates41.58443, -93.6451
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating36 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length139 ft (42.4 m)
Longest span127 ft (38.7 m)
Deck width81 ft (24.8 m)
Roadway width49 ft (15 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,983 (2022)
Projected traffic9,983 by 2043
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Grand Avenue over Mlk Pkwy built?

It was built in 2004, making it 21 years old in 2025.

What condition is Grand Avenue over Mlk Pkwy 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 July 2023.

How much traffic does Grand Avenue over Mlk Pkwy carry?

About 9,983 vehicles per day (2022 count).

How long is Grand Avenue over Mlk Pkwy?

The structure is 139 ft (42.4 m) long with a longest span of 127 ft (38.7 m) and a deck 81 ft wide.

Who owns Grand Avenue over Mlk Pkwy?

It is owned by the City or Municipal Highway Agency.