US Bridges

E Conger ST over Cedar River

Fair

Black Hawk County, Iowa · City Bridge No. 13 · Structure no. 000000000011900

Built
1977
48 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
500 ft
5 main spans
Daily traffic
10,190
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

E Conger ST over Cedar River is a steel continuous stringer/multi-beam or girder carrying E Conger ST over Cedar River in Black Hawk County, Iowa. It was built in 1977, so it is 48 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 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 10,190 vehicles a day, projected to reach 10,190 by 2043. The structure is 500 ft (152.4 m) long and 60 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesE Conger ST
CrossesCedar River
LocationCity Bridge No. 13
RouteCity Street 0
CountyBlack Hawk County
StateIowa
Coordinates42.5113, -92.36554
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.3 US tons
Inventory rating42.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length500 ft (152.4 m)
Longest span116 ft (35.4 m)
Deck width60 ft (18.3 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,190 (2022)
Projected traffic10,190 by 2043
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was E Conger ST over Cedar River built?

It was built in 1977, making it 48 years old in 2025.

What condition is E Conger ST over Cedar River 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 June 2023.

How much traffic does E Conger ST over Cedar River carry?

About 10,190 vehicles per day (2022 count).

How long is E Conger ST over Cedar River?

The structure is 500 ft (152.4 m) long with a longest span of 116 ft (35.4 m) and a deck 60 ft wide.

Who owns E Conger ST over Cedar River?

It is owned by the City or Municipal Highway Agency.