US Bridges

IH 35 SB over FM 310

Fair

Hill County, Texas · 5.5 MI N of FM 1242 · Structure no. 091100001407483

Built
2001
24 years old
Condition
Fair
inspected November 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
124 ft
1 main span
Daily traffic
34,626
2019 count
Owner
State
State Highway Agency

About this bridge

IH 35 SB over FM 310 is a prestressed concrete stringer/multi-beam or girder carrying IH 35 SB over FM 310 in Hill County, Texas. It was built in 2001, so it is 24 years old, younger 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 34,626 vehicles a day, roughly 36% of them trucks, projected to reach 48,885 by 2039. The structure is 124 ft (37.8 m) long and 59 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIH 35 SB
CrossesFM 310
Location5.5 MI N of FM 1242
RouteInterstate 35
StateTexas
Coordinates31.95709, -97.11549
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length124 ft (37.8 m)
Longest span124 ft (37.8 m)
Deck width59 ft (18 m)
Roadway width57 ft (17.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,626 (2019)
Projected traffic48,885 by 2039
Trucks36%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 35 SB over FM 310 built?

It was built in 2001, making it 24 years old in 2025.

What condition is IH 35 SB over FM 310 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 November 2022.

How much traffic does IH 35 SB over FM 310 carry?

About 34,626 vehicles per day (2019 count), of which roughly 36% are trucks.

How long is IH 35 SB over FM 310?

The structure is 124 ft (37.8 m) long with a longest span of 124 ft (37.8 m) and a deck 59 ft wide.

Who owns IH 35 SB over FM 310?

It is owned by the State Highway Agency.