US Bridges

Hiram RD (cr 310) over IH 20

Fair

Kaufman County, Texas · 3.00 MI E of FM 429/2728 · Structure no. 181300049501203

Built
1965
60 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
337 ft
4 main spans
Daily traffic
259
2022 count
Owner
State
State Highway Agency

About this bridge

Hiram RD (cr 310) over IH 20 is a steel continuous stringer/multi-beam or girder carrying Hiram RD (cr 310) over IH 20 in Kaufman County, Texas. It was built in 1965, so it is 60 years old, older than the Texas average of 44.4 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 259 vehicles a day, roughly 3% of them trucks, projected to reach 150 by 2042. The structure is 337 ft (102.7 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesHiram RD (cr 310)
CrossesIH 20
Location3.00 MI E of FM 429/2728
RouteCounty Highway 310
CountyKaufman County
StateTexas
Coordinates32.6688, -96.14613
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.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length337 ft (102.7 m)
Longest span95 ft (29 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic259 (2022)
Projected traffic150 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Hiram RD (cr 310) over IH 20 built?

It was built in 1965, making it 60 years old in 2025.

What condition is Hiram RD (cr 310) over IH 20 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 February 2024.

How much traffic does Hiram RD (cr 310) over IH 20 carry?

About 259 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Hiram RD (cr 310) over IH 20?

The structure is 337 ft (102.7 m) long with a longest span of 95 ft (29 m) and a deck 26 ft wide.

Who owns Hiram RD (cr 310) over IH 20?

It is owned by the State Highway Agency.