US Bridges

SH 70 over Dbl Mt Fk Brazos Riv

Fair

Fisher County, Texas · 3.59 MI S of Kent CO LN · Structure no. 080770026303005

Built
1934
91 years old, rebuilt 1975
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
520 ft
10 main spans
Daily traffic
725
2023 count
Owner
State
State Highway Agency

About this bridge

SH 70 over Dbl Mt Fk Brazos Riv is a steel stringer/multi-beam or girder carrying SH 70 over Dbl Mt Fk Brazos Riv in Fisher County, Texas. It was built in 1934 and reconstructed in 1975, so it is 91 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 725 vehicles a day, roughly 30% of them trucks, projected to reach 1,130 by 2033. The structure is 520 ft (158.5 m) long and 50 ft wide. If it were closed, the detour would be 51 mi (82 km).

CarriesSH 70
CrossesDbl Mt Fk Brazos Riv
Location3.59 MI S of Kent CO LN
RouteState Highway 70
StateTexas
Coordinates32.93051, -100.48817
Functional classRural Minor Arterial

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.
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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating28 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans10
Design loadH 15
Structure length520 ft (158.5 m)
Longest span52 ft (15.9 m)
Deck width50 ft (15.3 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic725 (2023)
Projected traffic1,130 by 2033
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed51 mi (82 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 70 over Dbl Mt Fk Brazos Riv built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1975.

What condition is SH 70 over Dbl Mt Fk Brazos Riv 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 July 2023.

How much traffic does SH 70 over Dbl Mt Fk Brazos Riv carry?

About 725 vehicles per day (2023 count), of which roughly 30% are trucks.

How long is SH 70 over Dbl Mt Fk Brazos Riv?

The structure is 520 ft (158.5 m) long with a longest span of 52 ft (15.9 m) and a deck 50 ft wide.

Who owns SH 70 over Dbl Mt Fk Brazos Riv?

It is owned by the State Highway Agency.