US Bridges

D-25 over Elliot Creek

Poor

Woodbury County, Iowa · 088463110 · Structure no. 000000000053510

Built
1957
68 years old
Condition
Poor
inspected July 2024
Type
Tee Beam
Concrete Continuous
Length
154 ft
3 main spans
Daily traffic
977
2022 count
Owner
County
County Highway Agency

About this bridge

D-25 over Elliot Creek is a concrete continuous tee beam carrying D-25 over Elliot Creek in Woodbury County, Iowa. It was built in 1957, so it is 68 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 977 vehicles a day, roughly 5% of them trucks, projected to reach 977 by 2044. The structure is 154 ft (46.9 m) long and 34 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesD-25
CrossesElliot Creek
Location088463110
RouteCounty Highway 0
StateIowa
Coordinates42.3978, -96.23489
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40.2 US tons
Inventory rating24.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length154 ft (46.9 m)
Longest span61 ft (18.6 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic977 (2022)
Projected traffic977 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 D-25 over Elliot Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is D-25 over Elliot Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does D-25 over Elliot Creek carry?

About 977 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is D-25 over Elliot Creek?

The structure is 154 ft (46.9 m) long with a longest span of 61 ft (18.6 m) and a deck 34 ft wide.

Who owns D-25 over Elliot Creek?

It is owned by the County Highway Agency.