US Bridges

Ely ST over Big Creek

Good

Linn County, Iowa · 0 · Structure no. 000000000000641

Built
2017
8 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete Continuous
Length
232 ft
5 main spans
Daily traffic
130
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Ely ST over Big Creek is a concrete continuous slab carrying Ely ST over Big Creek in Linn County, Iowa. It was built in 2017, so it is 8 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 130 vehicles a day, projected to reach 130 by 2044. The structure is 232 ft (70.7 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesEly ST
CrossesBig Creek
Location0
RouteCity Street 0
StateIowa
Coordinates41.94948, -91.53076
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating68.9 US tons
Inventory rating53.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHL 93
Structure length232 ft (70.7 m)
Longest span51 ft (15.5 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2022)
Projected traffic130 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ely ST over Big Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is Ely ST over Big Creek 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 October 2024.

How much traffic does Ely ST over Big Creek carry?

About 130 vehicles per day (2022 count).

How long is Ely ST over Big Creek?

The structure is 232 ft (70.7 m) long with a longest span of 51 ft (15.5 m) and a deck 33 ft wide.

Who owns Ely ST over Big Creek?

It is owned by the City or Municipal Highway Agency.