US Bridges

M.L.K. Jr DR over Over Cc RR

Good

Black Hawk County, Iowa · City Bridge No. 53 · Structure no. 000000000504310

Built
1996
29 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
278 ft
3 main spans
Daily traffic
6,494
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

M.L.K. Jr DR over Over Cc RR is a steel continuous stringer/multi-beam or girder carrying M.L.K. Jr DR over Over Cc RR in Black Hawk County, Iowa. It was built in 1996, so it is 29 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 6,494 vehicles a day, projected to reach 6,494 by 2043. The structure is 278 ft (84.7 m) long and 68 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesM.L.K. Jr DR
CrossesOver Cc RR
LocationCity Bridge No. 53
RouteCity Street 0
CountyBlack Hawk County
StateIowa
Coordinates42.50133, -92.32342
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.8 US tons
Inventory rating47.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length278 ft (84.7 m)
Longest span128 ft (39 m)
Deck width68 ft (20.7 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,494 (2022)
Projected traffic6,494 by 2043
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was M.L.K. Jr DR over Over Cc RR built?

It was built in 1996, making it 29 years old in 2025.

What condition is M.L.K. Jr DR over Over Cc RR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does M.L.K. Jr DR over Over Cc RR carry?

About 6,494 vehicles per day (2022 count).

How long is M.L.K. Jr DR over Over Cc RR?

The structure is 278 ft (84.7 m) long with a longest span of 128 ft (39 m) and a deck 68 ft wide.

Who owns M.L.K. Jr DR over Over Cc RR?

It is owned by the City or Municipal Highway Agency.