US Bridges

Anderson RD over Buffalo Creek

FairPosted for load

Linn County, Iowa · 085052403 · Structure no. 000000000222001

Built
1981
44 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Prestressed Concrete
Length
96 ft
2 main spans
Daily traffic
88
2022 count
Owner
County
County Highway Agency

About this bridge

Anderson RD over Buffalo Creek is a prestressed concrete tee beam carrying Anderson RD over Buffalo Creek in Linn County, Iowa. It was built in 1981, so it is 44 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. Its operating status is: posted for other load-capacity restriction.

It carries about 88 vehicles a day, projected to reach 88 by 2044. The structure is 96 ft (29.3 m) long and 24 ft wide.

Location

Open in Google Maps
CarriesAnderson RD
CrossesBuffalo Creek
Location085052403
RouteCounty Highway 0
CountyLinn County
StateIowa
Coordinates42.16364, -91.37211
Functional classRural Minor Collector

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating40.3 US tons
Inventory rating31.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length96 ft (29.3 m)
Longest span47 ft (14.3 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic88 (2022)
Projected traffic88 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Anderson RD over Buffalo Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Anderson RD over Buffalo 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 September 2024.

How much traffic does Anderson RD over Buffalo Creek carry?

About 88 vehicles per day (2022 count).

How long is Anderson RD over Buffalo Creek?

The structure is 96 ft (29.3 m) long with a longest span of 47 ft (14.3 m) and a deck 24 ft wide.

Who owns Anderson RD over Buffalo Creek?

It is owned by the County Highway Agency.