US Bridges

FM 1520 over Lake Bob Sandlin

Good

Camp County, Texas · 4.15 MI NW of Lp 179 · Structure no. 190320123203009

Built
1978
47 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
750 ft
10 main spans
Daily traffic
351
2020 count
Owner
State
State Highway Agency

About this bridge

FM 1520 over Lake Bob Sandlin is a prestressed concrete stringer/multi-beam or girder carrying FM 1520 over Lake Bob Sandlin in Camp County, Texas. It was built in 1978, so it is 47 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 351 vehicles a day, roughly 15% of them trucks, projected to reach 420 by 2033. The structure is 750 ft (228.6 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFM 1520
CrossesLake Bob Sandlin
Location4.15 MI NW of Lp 179
RouteState Highway 1520
StateTexas
Coordinates33.05144, -95.02043
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans10
Design loadHS 15
Structure length750 ft (228.6 m)
Longest span75 ft (22.9 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic351 (2020)
Projected traffic420 by 2033
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 1520 over Lake Bob Sandlin built?

It was built in 1978, making it 47 years old in 2025.

What condition is FM 1520 over Lake Bob Sandlin in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.

How much traffic does FM 1520 over Lake Bob Sandlin carry?

About 351 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is FM 1520 over Lake Bob Sandlin?

The structure is 750 ft (228.6 m) long with a longest span of 75 ft (22.9 m) and a deck 28 ft wide.

Who owns FM 1520 over Lake Bob Sandlin?

It is owned by the State Highway Agency.