US Bridges

5th ST over E Big Creek

Fair

Linn County, Iowa · 000000000 · Structure no. 000000000011051

Built
1986
39 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete Continuous
Length
130 ft
3 main spans
Daily traffic
1,069
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

5th ST over E Big Creek is a concrete continuous slab carrying 5th ST over E Big Creek in Linn County, Iowa. It was built in 1986, so it is 39 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 1,069 vehicles a day, projected to reach 1,069 by 2042. The structure is 130 ft (39.6 m) long and 40 ft wide.

Location

Open in Google Maps
Carries5th ST
CrossesE Big Creek
Location000000000
RouteCity Street 0
CountyLinn County
StateIowa
Coordinates42.05674, -91.44573
Functional classRural Local

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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span51 ft (15.5 m)
Deck width40 ft (12.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,069 (2022)
Projected traffic1,069 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 5th ST over E Big Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is 5th ST over E Big Creek 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 March 2023.

How much traffic does 5th ST over E Big Creek carry?

About 1,069 vehicles per day (2022 count).

How long is 5th ST over E Big Creek?

The structure is 130 ft (39.6 m) long with a longest span of 51 ft (15.5 m) and a deck 40 ft wide.

Who owns 5th ST over E Big Creek?

It is owned by the City or Municipal Highway Agency.